Jim Lake Jr.

This article contains canon information corresponding to the Tales of Arcadia franchise. That means all information in this article is true and has appeared/been validated officially on-screen.

“Destiny... is a gift. Some go their entire lives, living existence as a quiet desperation. Never learning the truth that what feels as though a burden pushing down upon our shoulder, is actually, a sense of purpose that lifts us to greater heights. Never forget that fear is but the precursor to valor, and to strive and triumph in the face of fear is what it means to be a hero. Don't think. Become.”

―Jim during his audition for Romeo and Juliet

Jim Lake Jr.
Appears In
TV Shows	Trollhunters 3 Below Wizards
Character Information
Full name	James Lake, Jr.
Alias	Trollhunter The Bular Slayer Young Atlas (Strickler) Jimbo (Toby) Master Jim (Blinky) Flesh-bag (Draal and Vendel) Jim "Fake" Jr., Buttsnack (Steve) Jimmy Jam (Mary) Little Gynt (Nomura) Jim the Baby-Handed (Bagdwella) Hunter (Angor Rot)
Age	15-16 (as of "Bittersweet Sixteen")
Hair color	Black
Eye color	Blue
Race	Human (formerly) Half-Troll (currently)
Home	The Lake’s House, Arcadia Oaks (formerly) Heartstone, New Jersey (currently)
Affiliation	Good
Personality	Intelligent, heroic, kind, loyal, brave, overprotective, responsible
Family	Jim Lake, Sr. (father) Barbara Lake (mother)
Friends/Allies	Toby Domzalski (best friend/ surrogate brother), Claire Nuñez (girlfriend), Blinky (surrogate father), AAARRRGGHH!!!, Draal the Deadly (surrogate brother), Vendel, Eli Pepperjack, Mary Wang, Darci Scott, Steve Palchuk, Nomura, Stricklander, Merlin, NotEnrique
Enemies	Gunmar, Bular, Dictatious Maximus Galadrigal (formerly), Otto Scaarbach, Usurna, Morgana
Weapon(s)	Sword of Daylight Sword of Eclipse
Likes	Heroism, cooking, Claire, riding his moped, taking care of his mother
Dislikes	Villains, his friends and loved ones being in danger, lying to his mother
Status	Alive
Behind the Scenes
Voiced by	Anton Yelchin (P1 and P2, a small portion of P3) Emile Hirsch (the rest of P3)
First appearance	"Becoming, Part 1"
Last appearance	"The Eternal Knight: Part 2”

James "Jim" Lake, Jr. is a main character in the Tales of Arcadia series who appears as the main protagonist of Trollhunters. 

Official Description

“On the surface, Jim appears to be an average 15-year-old student. He goes to school, stays out of trouble, looks after his mom, and selflessly puts others above himself. But there's a piece of him that yearn for a life of adventure outside the doldrums of suburbia. When destiny calls and a magical amulet chooses Jim to be the first human Trollhunter, the protector of a secret world of Trolls living beneath his hometown, Jim is thrust into the greatest adventure of his life. Whether it's rogue gnomes, mischievous goblins or Trolls of the worst kind, Jim has a lot to learn if he wants to live to see graduation.”

―Jim's Official Description

History

Background

Around his fifth birthday, Jim's father walked out on him and his mother, Barbara. His mother then told him that they needed to take better care of each other. Jim has cared for his mother ever since.

Sometime in kindergarten, Jim met Toby Domzalski, who became his new best friend.

Eventually, Claire Nunez came to town and about a year before he found the amulet, Jim met her at a party held by her mother and subsequently fell deeply in love with her after seeing her dance alone to a song by Papa Skull. Although Jim didn't think she knew he existed, Claire had in fact noticed him and was impressed that he had at least attempted to dance during the party.

Part One

Finding the Amulet

Jim and Toby wake up one day and decide to ride their bikes to school together. Jim makes lunches for himself, his mother, and Toby. He then meets Toby outside and they make their way to school. They decide to take a shortcut to school through the large bridge, where they discover the Amulet of Daylight in the rubble of Kanjigar's body. The amulet starts ominously chanting Jim's name, which prompts the boy to pick it up and take it to school. They then continue to get to school, not knowing that two trolls, Blinky and AAARRRGGHH!!! are eavesdropping on them. 

When they arrive at school, Jim stares dreamily at Claire, not paying attention to what is going on. When class ends, Jim's teacher, Mr. Strickler expresses concern over Jim's performance in class. He says that he understands that Jim and his mother have a lot on their plate, so he decides to schedule a parent-teacher conference to discuss Jim's behavior. 

In gym class, Jim tries to gain the courage to Claire by speaking some Spanish to her. Claire suggests that Jim should try out for the school's play of Romeo and Juliet. After class, Jim and Toby see that Steve is shoving Eli into a locker (after the latter told him of the trolls that have been lurking in town), and Jim decides to stand up to Steve. When Jim makes snarky comments about Steve, the jock challenges him to a fight, only to be stopped by Strickler. 

After school, Jim goes home to watch TV and decides to sell the amulet online. All of sudden, he hears something going on downstairs and hopes that it's just raccoons. He goes downstairs and finds that it's none other than Blinky and AAARRRGGHH!!! Jim is frightened by the two, who explain to him that the amulet is magical and he's been chosen to protect a magical land of trolls from the forces of evil, which causes Jim to faint and the two trolls to leave. 

The next day at school, Jim goes to Mr. Strickler's office to explain what had happened, but since he probably wouldn't believe him, he tells him that he is trying out for chess. Strickler commends him on this "extracurricular activity" and Jim happily leaves, not knowing that Strickler is aware of the amulet in his bag.  However, the amulet starts glowing again. He goes back to the canal to try to figure out more about the amulet and where it came from. When the amulet's gears shift, Jim takes it out of his bag and finds some writing on the back ("For the glory of Merlin, daylight is mine to command!") He says the incantation and suddenly, a suit of armor appears on him and a sword appears as well, leaving the boy in amazement and shock. Little does Jim realize that Mr. Strickler and Bular are eavesdropping on him since they were trying to steal the amulet for themselves. 

The next day at school, Strickler causes the Trollhunter armor to activate, and Jim uses the Romeo and Juliet play auditions to attempt to hide the true nature of the armor. Forced to audition, Jim uses Blinky's speech about destiny and winds up getting the part. Unfortunately, Stickler has also found out and is actually working for Gunmar. Jim starts using the sword and easily masters it with his slicing and dicing skills.

First Arrival in Trollmarket

While outrunning Bular and being guided to safety by Blinky and AAARRRGGHH!!!, Jim and Toby are taken to the land of Trollmarket and are very intrigued by the environment and all of its inhabitants. However, the trolls do not take kindly to the arrival of humans in their town, much less having a human as their protector, especially Draal the Deadly, Kanjigar's son, who wanted to be the new hunter instead of Jim.

When Jim starts his training, Jim begins having difficulty with the dangerous and fearful tasks. Then, Draal decides to battle Jim for the honor of being the Trollhunter, which Jim has no choice to but accept. Jim tries to get rid of the amulet, but it won't leave him alone. Jim has no choice but to accept his newly found fate. 

The Double Life Begins

For his first task as the Trollhunter, Jim is sent to stop a gnome named Chompsky, who is stealing everything in Trollmarket. Using a shrinking spell, Jim and Toby capture him. However, Jim is still shrunken on the same day that he is supposed to give his Spanish report. Jim and Toby then come up with a plan to give the report while the shrinking wears off. 

Jim decides to give his Spanish report via webcam but runs into some trouble when Chompsky starts rampaging through Toby's house and he starts going back to his normal size. Luckily, Jim gets a passing grade and nobody becomes suspicious. Unfortunately, Jim starts neglecting rehearsals for the school play, which sort of strains his relationship with Claire.

Discovering the Killahead Bridge

Jim and Toby go on a field trip with their class to a museum of ancient history. During that, Toby discovers that some goblins are on the loose and informs his friends about it. They arrive at Eli's house, where the goblins last attacked to stop them. Unfortunately, the goblins get away and leave with Toby's watch.

That night, Jim and Toby track down the watch and break into the museum to see what the goblins are up to. While sneaking in, they find out that the curator, Ms. Normura is actually a changeling, a type of creature that takes the form of its human counterpart when swapped at birth. During the battle, Jim uses Blinky’s advice to outsmart Normua and actually causes her to squish the goblin leader, which makes the goblins turn on her and attack her. During the battle, Toby discovers some sort of bridge, which he believes to be the Killahead Bridge. He takes a photo of it, but the picture comes out blurry. Blinky then informs Jim about the changelings, and how there might be more lurking among them.

The Battle Begins

The day for Jim's battle against Draal begins. Since this is probably his biggest battle yet, he leaves letters to Claire, Toby, and Barbara in case he doesn't live, telling them what is going on and how he truly feels. Jim begins to start studying Troll battle with the amulet, which also is a translator for Troll letters. 

Jim heads to Trollmarket, where the battle begins and it becomes quite heated. Using Blinky's information from the book, he manages to defeat Draal and send him hanging from an abyss. Rather than push Draal off the cliff as he is pressured to from the others (and Draal himself), he follows his moral compass and rescues Draal, causing the troll to be shunned by everyone and humiliated. 

Jim arrives back home and sees Normua with his mother. While Jim is telling Normua off, Barbara falls asleep and Normua changes into her changeling form to get rid of Jim. Since Jim is nowhere near his amulet, he is helpless against her. Just when all hope seems lost, Draal suddenly shows up and defeats Nomura. Jim asks why, and Draal replies that he's decided to become Jim's protector/trainer to help him be more prepared for his upcoming battles. 

Search for the Changelings

Jim and Toby take Blinky, AAAARRRGGGHHH!!!, and Vendel to the museum to see the Killahead Bridge, but it has vanished somehow, and no one believes him (except for Blinky, of course). Blinky says that he will try to find more evidence while Jim continues his training.

Back in school, Jim's high school career is going downhill, and Steve has become his understudy for the school play since he keeps missing rehearsals. Claire takes note of this and decides to ask him to come to her house for a study date.

Jim and Toby go back to Trollmarket to get proof that the bridge is there. Blinky and AAARRRGGHHH!!! take them to a troll named "RotGut", who provides them with something called a "gaggletack", which is a horseshoe. Jim and Toby try to search for the Changelings, but nobody complies.

While Toby is at the dentist, Claire and Jim are at Clarie's house having their study session. Here, Jim and Claire start to do some bonding, and Claire claims that Jim's letter was a metaphor for Jim's psychological issues, and thanks Jim for his compliments in the letter. As soon as they study, Toby calls Jim for help and Jim leaves hastily, which leaves Claire suspicious.

Jim arrives at the dentist, where the Changeling is attacking Blinky, Toby, and AAAARRRRGGHHH!!! Luckily, Jim manages to vanquish the Changeling, but also all the evidence they have for the bridge. On the plus side, Jim accomplished Blinky's rule of "finishing the fight."

Finding NotEnrique

The next day, Jim and Toby find a stuffed bunny fall out of the sky, and Claire claims that it belongs to her baby brother, Enrique. The boys then conclude that Enrique must have been swapped with a Changeling, since Blinky told them earlier that Changelings are switched with their human counterparts at birth.

To investigate, Jim arrives at Claire's house to babysit Enrique and find out. When Enrique somehow starts causing trouble, Jim loses the gaggletack and now, the others have to get a new one.

When the gang arrives, Enrique is revealed to be replaced with a Changeling, who starts trashing the place. Now that they have proof, they can do something about the bridge. Unfortunately, this leads to Jim and Toby being in big trouble with Claire, and Claire getting into trouble with her folks. Claire refuses to speak to Jim anymore.

Jim's Birthday Arrives

Jim's birthday eventually arrives, but he does not seem interested in celebrating it, despite the insistence of his friends and mother. Luckily, Jim is given a chance to test drive a moped that he has had his eyes on for quite some time. However, another sub-species of troll called a Stalkling shows up to attack Jim.

Jim learns from Blinky that he cannot be harmed unless he is truly all by himself, so he decides to make sure he is in the company of someone at all times. Jim goes to rehearsals to try to make amends with Claire, and to keep himself safe. Unfortunately, Claire still doesn't trust Jim after her parents blamed her for leaving Jim with Enrique.

Without a ride to take him home, Jim is left on his own and tries to get away from the Stalking, but it catches up to him and carries him into the clouds. All of a sudden, lightning appears and Jim uses it on his sword to strike the Stalking and turn it into stone, in which he succeeds.

A few minutes before his birthday ends, Jim goes back to Trollmarket to receive Blinky's present, which is an unassembled moped that Blinky thinks that they could assemble together. Jim loves the gift and claims it as "the greatest gift [he] has ever gotten."

Overconfidence Isn't Key

One day, while training with Draal, Jim feels a little nervous about talking to Claire and the play. To help him, Draal gives him a special necklace that will boost his confidence and fearlessness. Unfortunately, Jim starts to act smug, arrogant, rude, and disrespectful towards his friends and teachers. To make matters worse, Jim decides to go fight Bular himself in the sewer. In this battle, Jim hears Bular call him "Young Atlas," which is Strickler's nickname for him, which causes Jim to figure out that Strickler is evil.

A New Foe

Having found out about Stickler being evil, Jim decides to come up with a plan; he'll keep Strickler occupied while he's having dinner at the Lake's residence and the others will sneak into Strickler's office for some things that could help them get Claire's brother back.

During dinner, Jim and Strickler look at each other with grinning faces, knowing of their dark secrets. When Barbara leaves to get dessert, Jim and Strickler start fighting each other, threatening one another at the same time.  When Barbara's back is turned, Strickler changes into his Changeling form, threatening Jim to hand over the amulet, but Jim refuses to comply. When the dinner ends, Strickler leaves the Lake House, with Jim acting subtle, not knowing that Strickler replaced the amulet with a fake one. 

Claire Finds Out

When Jim finds out that the "amulet" isn't working, he becomes stuck in a jam in his mission to rescue Enrique. Since they can't go into the Darklands themselves, they send Gnome Chomsky to go in and find Enrique. However, the rope holding him snaps, rendering him trapped in the Darklands.

Before the gang can think of something new, NotEnrique arrives at the house and warns them that he killed one of the goblins and now, they think Claire is responsible and that the bridge has been completed. Jim goes to rescue Claire, while Toby and AAARRRGGGHH!!! follow Jim to protect him, and Blinky takes NotEnrique to find out where the bridge is being held.

Jim arrives at Claire's house to warn her, but she will not listen to him and thinks that he is just plain crazy. All of a sudden, the goblins show up to attack them and Jim takes her to the woods for safety. When the goblins arrive, Jim starts getting attacked by the goblins after finding out that the amulet is a fake. When Jim shouts the incantation, the amulet flies out of Strickler’s hands and ends up right in Jim's grasp, which causes the armor to activate, and Jim defeats the goblins. Claire is shocked but also impressed by Jim's amazing abilities, while at the same time regretting how unfair she been to his new double life situation. When Jim tries to explain what happened to Enrique, Nomura arrives and starts attacking Jim. Nomura decides to not to kill Jim because apparently, they need him to use the amulet to unlock the bridge. Just then, Toby and AAARRRGGHHH!!! arrive at the same time as Claire's folks, who find Jim unconscious and hurt.

Battle for the Bridge

Jim wakes up in the hospital, where he receives a call that the Gumm-Gumm army has kidnapped Blinky for ransom. If Jim doesn't arrive with the amulet and open the bridge, Blinky will be destroyed, leaving Jim even more conflicted than before. To make matters worse, Barbara is growing even more worried by the second, and Jim still refuses to tell her what is going on, leaving Barbara more heartbroken and concerned. 

Jim leaves the house to go fight Bular and rescue Blinky. He tells Draal that if he does not make it, he'll be the next Trollhunter. Jim arrives at the museum, where he sees Bular and the rest of his minions ready for Jim to use the amulet. Jim goes to the bridge and is about to put the amulet in the bridge (despite Blinky's warnings), when all of a sudden, the rest of the Trollhunters arrive to back Jim up. A huge battle between the heroes and the villains ensues, but Stricklander manages to outsmart Jim and installs the amulet onto the bridge, which opens up the portal to the Darklands. Everybody starts to get sucked into the vortex. Draal manages to use his strength to free the amulet and cause the bridge to explode. However, Jim finds that Draal's left arm has turned into stone. However, Bular has escaped and is about to destroy the Trollhunters. Our heroes manage to escape into the sewer, but Bular chases Jim to the bridge where Kanjigar died. The two engage in an epic battle on the bridge, just as the sun is setting down. Bular manages to capture Jim and is about to finish him off, but Jim uses his newly found powers from the armor to turn Bular to stone and send him into the river. Blinky, AAARRRGGGHHH!!!, Toby, and Draal (now with a mechanical arm) congratulates Jim from his heroism, and Draal gains a newfound admiration and respect for Jim. 

Jim manages to make it to the play in time and the performance goes on as planned, which immensely helped in mending and strengthening his growing relationship with Clarie. Then, during a celebration at Trollmarket, Jim vows to rescue Enrique and find a way into the Darklands, especially since Gunmar and Stricklander will stop at nothing to make them even. 

Entering the Void  

Now that Bular has been taken care of, Jim is still conflicted on whether or not to tell his mother the truth, Claire's brother still being trapped in the Darklands, and Claire now knowing about the world of the trolls. He and Toby take Claire to Trollmarket for the first time, where she instantly proves to be an expert (having read the history book Blinky gave Jim and from NotEnrique's tutoring). 

Suddenly, Jim is summoned to the Void, a place between worlds inhabited by previous hunters. Kanjigar reveals to Jim that they are aware of what Jim has been doing, and condemn him for his choice to go into the Darklands, since it could endanger his friends. They inform Jim that the only possible way to escape the Darklands is by destroying Gunmar. Jim informs his friends of this problem and decides that there might be a way to fix it. 

Spring Fling King

Jim begins having strange dreams about fighting Gunmar, and how he is going to defeat him. One day during a school assembly, Jim nominated from prom king, along with Steve and Eli. Toby encourages Jim to join in the election because it could help them become more popular, to which Jim reluctantly agrees. 

Later, Jim goes back to the Void for some advice from the other hunters, but they inform him that there is no possible way to get rid of Gunmar for good. However, Blinky calls Jim back to the library because he has some interesting news for him, Claire, and Toby. Blinky explains that there are three special gems called "The Triamburic Stones", which can help them destroy Gunmar. However, they are hidden in three different locations around the world, which means that the Trollhunters will have to go on their very first quest.  The next day, Jim, Steve, and Eli compete against each other for the theme of the spring dance. While Steve and Eli are coming up with their own respective ideas (Hawaiian for Steve and 80s for Eli), Jim sees a Golem outside created by Strickler and Angor Rot to test his abilities. 

Jim fights the golem, which results in his clothes being covered in mud. After the golem is vanquished, Jim goes back into the gym all dirty. Toby and Claire use this as a metaphor for Jim’s theme: moles. Jim wins the challenge since moles are the mascot of the school. Unfortunately, Strickler returns to the school as the new principal (having done something to the old one), which leads to some large conflicts at school.

The Quest Begins

When the quest for the stones begins, Jim covers it up by telling Barbara that he is going camping with his friends, but Barbara is still angry at Jim for getting himself hurt and not explaining the truth to her, though Jim still leaves.

Jim meets his friends in Trollmarket to start the mission. Blinky takes them to a magical gyre that trolls use to get around the world in record time. Blinky takes the gang inside the gyre and takes them to Argentina, where the first stone is located. They arrive there and end up at a place called, "Ojos del Salado", a village underneath a volcano, which is also the home of Gatto, the keeper of the stone. When they locate Gatto, Jim tries to explain what is going on, but Gatto will not give them the Birthstone unless they answer his riddle, "Which begins and has no end, and ends all that which begins?" The Trollhunters try to think of the answer, but are too confused to find a logical solution. At the last second though, Claire finds the answer, which is "death", since it ends people's lives and nothing comes after it happens. Unfortunately, Gatto does not take it so well and swallows both Blinky and Toby.

While Blinky and Toby find the Birthstone and try to find a way to get out of the stomach, the others battle Gatto's minions. With the help of Toby's tacos, Toby and Blinky manage to escape the stomach with the Birthstone. However, Blinky also seems to have had a little encounter with one of the spells in the stomach...

A Whole New Blinky

Jim goes back into Trollmarket to continue the quest, only to find that Blinky has transformed into a human as a side effect from one of the spells in Grotto's stomach. Luckily, the effect will only last a few days, so Jim decides to show Blinky the wonders of being a human including surviving the daylight, going to the bathroom, eating human food, and having only one set of eyes and arms. When Barbara arrives home early, she asks who Blinky is, and what he is doing in their house. Jim lies by saying that Blinky is his new guidance counselor, to which Barbara easily buys.

As Jim and Claire take Blinky to look at the sunset, Angor Rot creates glass monsters to attack them. While the gang fights the monsters, Jim sees Angor Rot behind a tree and goes to investigate what is going on. He encounters Angor, who traps him in a large force field. Anger decides to spare Jim's life because he apparently has a worse fate than death in mind for the hunter. Anger then uses his staff to drain some of Jim's powers and use them against him in their next battle.

The Next Stone

Jim is still struggling to ask Claire out to the dance, but also needs to help Blinky adjust to his new life in the human world.

Jim then goes to Trollmarket, having been called by Vendel for something regarding the Birthstone. Vendel then tells Jim to cut the birthstone to unlock its power. Jim uses some tools to cut the stone and then unlocks some sort of geode in the center. When Jim asks why Vendel is helping him, Vendel replied it is because he knows how determined Jim is to save Enrique, which means he will need some extra power in his armor. Vendel installs the gemstone into Jim's amulet, which causes the armor to become red, confusing both of them. Mendel then tells Jim that the next stone; the Killstone is in the Quagawumps Kingdom, not knowing that a goblin spy is secretly watching them for Angor and Strickler.

The Trollhunters go to the gyre to make their way to the Quagawumps in the swampy lands of Florida. However, since the inhabitants are hostile towards outsiders, they will need a mole to assist them. Since Toby looks like their late king, he will pretend to be the reincarnation of him, which will gain the trust of the trolls. 

They arrive at the swamp, where the Quagawumps are easily fooled into thinking that Toby is their king. The trolls start worshipping him and throw a party in his honor.  When Toby starts making music, which gives everybody dance fever. Jim is reluctant to do so since he doesn't know how to dance, so Claire teaches him how to move his feet to the music and they start dancing together. 

Things go smoothly until Blungo, their pretend king arrives and shows the other Wumpas that Toby is not the Shattered King. Before Blungo can attack Toby, Angor Rot arrives and turns Blungo to stone, causing an epic battle. During the battle, Claire falls into a portal with Angor and manages to obtain his Shadow Staff, which creates portals, but unfortunately loses the Killstone as well. Claire decides to keep the staff,  and the Trollhunters bid a heartfelt goodbye to their friends. 

Hand Truck Competition

While training Claire to use the Shadow Staff, Bagdwella arrives with a box for the Trollhunters to deliver to her sister in Utah. Since he has to compete in another prom king challenge after lunch period, he has Toby and Claire deliver the package for him.

Jim arrives at the competition, where the contestants have to keep their hand on a truck and if someone takes their hand off, they are eliminated from the game and the winners will become prom king and queen. Sometime later, Strickland arrives to mock Jim, which also causes Shannon and Mary to be eliminated from the contest, making Darci the winner and leaving Jim, Steve, and Eli the only remaining competitors. Steve begins to mock Jim into letting his hand go, but Jim stands his ground and refuses to surrender. When Steve pathetically starts sobbing, Jim lets his hand off, making Steve gloat about his victory, but it also means that he lost too, because they forgot about Eli, making him the winner of the prom king challenge.

Jim's Worst Nightmare

When the students at school start acting weirder than usual, Jim and Toby suspect that something supernatural must be occurring, so they go to Strickler's office to see if he had anything to do with it, only to find his office empty. Just then, a pixie goes into Toby's nose and starts making him hallucinate his nana, giving him a mental breakdown. Jim calls Blinky to ask him what is causing the hallucinations, and Blinky replies that the pixies are used to create hallucinations to distract enemies.

Angor Rot then arrives at the school to confront Jim, who is ready with his battle armor. Before Jim can attack, Angor uses the spell that he cast on Jim before to take the sword and use it against him. Jim and Angor engage in a battle, with Angor using the sword and Jim using extra weapons from the armor. When Jim ends up in the P.E room, a pixie flies into his ear and causes him to hallucinate the Killahead Bridge and his loved ones all turned into statues. Jim tries to fight Angor without seeing him, but it is no use; he has the upper hand and grabs Jim, holding the sword up against his neck. Angor Rot informs Jim of the Inferna Coupla and wants Jim to steal it so he can get his freedom back, which also means that Barbara will be safe. Jim reluctantly agrees, and Angor sends the pixies back into their chamber.

Removing the Ring

Jim, Toby, and Claire meet at Claire's house to discuss on how to possibly steal the Inferna Coupla from Strickler, but all of their plans are greatly flawed, so Jim and Toby decide to go to Trollmarket and use Blinky's library for help. Jim and Toby arrive at RotGut's place to find a spell, but they are not helpful, so Blinky decides to take them to his library for a hand. Blinky informs the boys that the books used to belong to his brother, whom he had lost long ago in the Battle of Killahead Bridge. The two begin looking into the books for some answers, but they cannot find anything that'll help them. Toby then finds a vial of some sort of potion and begins guzzling it down. Unfortunately, Toby didn't follow the instructions and the words in the books start flying into his mouth, making him a Troll History bookworm. However, the words start flying all over the room out of control, but Toby also gives Jim some important information on how to get the Coupla from Strickler; they must gain a magical item called "The Kariosect", which will help them get the ring, but it is located at Gatto's Keep. Just then, Toby starts spewing out different letters while trying to tell Jim the secret of life itself, which causes the potion to wear off. 

Race Against Time

The Trollhunters head to Gatto's Keep to get the Kariosect. They manage to outsmart Gatto and retrieve the Kariosect. They get back to Trollmarket and discover it is an artifact that makes the user travel faster than the speed of light. Jim, Toby, and Claire begin to picture all the accomplishments they can do with this device, but Blinky warns them that only a single person can step out of time, the time-stopping effect only lasts 43 minutes and nine seconds, and it can only be used thrice. Unfortunately, Blinky wasted the first two uses, so they only have one chance to get the ring back.

Jim goes home and starts cramming for the Spanish final. Barbara arrives and informs Jim that she is going to be reaching out to Blinky, but Jim is too busy to pay attention.

The next day, Jim is becoming very stressed out and frustrated; he failed the exam, he is conflicted on whether or not to go with Angor's deal, Bagdwella has an infestation in her house, Steve is mocking him over the next challenge, Blinky has changed back into a troll at a bad time, and it just generally seems that the whole world is expecting him to do everything for everyone. When Jim can't take it anymore, he screams his head off, runs away, and decides to use the Kairosect to freeze time and make his problems vanish.

Remembering that he only has forty-three minutes and nine seconds to get the ring, Jim hops on his scooter and races against the clock. He goes into the hallway and finds the stacking contest in progress. Jim uses this to get back at Steve for being mean to him, finish the test, stop Barbara from breaking into Blinky's stall, bring Blinky back home, take care of the gnomes, and steal the ring from Strickler. When Jim puts on the ring, he gains control of Angor Rot's soul, but also realizes that he can get the Killstone back. 

Jim races to Angor Rot's location in the sewer to swipe the stone, but just when he is about to get the stone back, time starts back up again, which means that Angor is after his ring. Right before Jim can put on the ring to control Angor, Angor uses his powers to cause the ring to fly off of Jim and roll onto the floor. Jim tries to defend himself with the armor, but Angor steals the sword and destroys the ring, giving him his soul back and rendering him free to destroy Jim and Strickler. Luckily, Jim manages to escape the sewer and present his friends with the Killstone. Unfortunately, this makes Angor Rot a greater threat than before. 

The Battle for AAARRRGGGHH!!!

During the middle of their discussion, members of AAARRRGGHH!!!'s trolls race called "The Kruberas" and their queen, Usurna arrive unexpectedly. Jim asks about the Triumbic Stone, but the queen had lost it years ago. To celebrate this glorious occasion, Vendel has Jim and AAARRRGGHH!!! represent Trollmarket in a friendly game of PyroBligst.

When AAARRGGHH!!! refuses to participate, Draal decides to substitute as Jim's partner. Unfortunately, Jim's no match for the Kruberas and Draal is easily defeated. Just when Jim is about to lose, AAARRGGHH!!! arrives and helps Jim win the game. Sadly, this also reveals that AAARRRGGHHH!!! has been cursed to be turned to stone and that he has been scared to tell the others. Ursuna tells AAARRRGGHHH!!! that the only he can survive if he goes back with his Krubera brethren, to which AAARRGGGHHH!!! reluctantly agrees. 

However, AAARRRGGGHH!!!'s loyalty to Toby is too great, so he decides to stay with the other Trollhunters until Angor Rot is defeated. While Jim eavesdrops on his two friends, Strickler arrives and asks Jim for some help in defeating Angor Rot, but Jim is understandably skeptical, knocks him out cold, and ties him up to a chair.

Teaming Up with Strickler

The very next morning, Jim wakes Strickler up with a sock and tries to call his friends for some assistance, but Strickler warns him that his friends will not help against a deadly assassin like Angor.

In the kitchen, Jim, Draal, and Strickler discuss on how to defeat Angor Rot, but cannot think of anything, so they decide to leave the house until the heat dies down. Barbara then calls Jim and informs him that she will be staying at the hospital for the entire weekend, ensuring her safety.

That night, the three set up a trap for Angor to use the stones to strike him. Just then, they notice Angor's eye spying on them. They try to catch it, but it keeps escaping. Luckily, Jim manages to capture it in the kitchen. Unfortunately, it appears that Angor has arrived already, so they prepare their weapons to strike him, but it isn't Angor; it is Barbara, who wonders what's going on, now that she's seen Draal and the weapons. Jim tries to lie again, but the jig is up; he has to tell her the truth. 

Jim explains about his position as the Trollhunter, and that he has to do it for the rest of his life. Barbara expresses great concern for Jim, based on what being the Trollhunter has already put him through. All of a sudden, Angor arrives and begins attacking Jim. While Strickler and Barbara go downstairs, Jim battles Angor with all his might. When they arrive in Jim's bedroom, Strickler activates the trap, encasing Angor in a prison and is surrounded by UV light bulbs, which slowly start disintegrating him. Unfortunately, Barbara arrives and ruins everything, causing Angor to destroy the lightbulbs. While Jim and Strickler struggle to get Barbara to Trollmarket, Draal holds Angor down. Jim carries his mother in his arms, expressing remorse for his actions and dishonesty. 

Telling Mom the Truth

Jim hands Barbara to Vendel for help on how to undo the curse and begins waiting with the other Trollhunters. Eventually, Vendel informs them that Barbara cannot fully recover unless the binding spell is removed.

While Toby and Claire go to get the incantation for the reverse spell, Jim talks with Blinky about what he should do next. Blinky informs Jim that his time as a human has taught about the importance of a strong, human bond and that he needs to console his mother. Jim goes to his mother and apologizes for his actions. He explains that he only did it because he didn't want her to be worried or want to protect him, but now he's realized that she was worried either way. Jim tells Barbara that being a Trollhunter was probably his true destiny and that she doesn't need to worry about him as such.

Vendel comes to Jim and informs him that Strickler is refusing to do the reversal spell. Jim goes to confront Strickler, who pathetically begs for mercy and (almost) admits his true feelings for Barbara. He claims that he doesn't want to do undo the spell because it prevents Jim from hurting him and the others will probably throw him to the wolves as punishment. Jim agrees not to hurt Strickler, as long as soon as the spell is reversed, he leaves town for good, to which Strickler agrees. 

Vendel then arrives and says that Barbara will be cured of her terrible curse, but she will also lose her memories of the Trollhunters in the process. Before the spell is undone, Barbara begs several times for Jim to remind her of his Trollunting life, so she doesn't have to worry about him again, and Jim agrees. When Claire and Toby arrive with the spell, Vendel reverses the curse and erases Barbara's memory of Trollmarket. When Barbara wakes up in the hospital back on Earth, she asks Jim why she's there. Jim is about to tell her about Trollmarket, but he quickly covers it up by saying that she fainted and bumped her head, breaking his promise again. 

Jim goes to the dance to see his friends. Claire says that she wants to go inside with him, but Jim decides not to, and they go to the hill on the mountain to have a private dance of their own. Just when Jim and Claire are about to kiss, Claire realizes that Angor now has access to Trollmarket, since there was a key in Claire's pocketbook. 

The Battle for Trollmarket

When the kids inform Vendel of Claire's carelessness, the trolls arrive with Strickler, because he was the one who released Angor. Jim informs the trolls that Angor is on his way because he has a HornGazel, which makes the trolls even more angry with Jim. Just when the trolls are about to punish Jim and Strickler for their actions, Vendel assures the trolls that even though Jim made several mistakes, he still has helped them in their times of need and they need him most of all now that Angor is going to attack their home. When Claire, Toby, Bagdwella, Blinky, AAARRGGHHH!!!, Draal, and NotEnrique come to Jim's defense, the other trolls agree to fight Angor for their home.

While the trolls are preparing for the upcoming battle, Toby and Claire inform Jim that Chomsky has arrived with a message from Gunmar: Since Jim killed Gunmar's son, he is going to retaliate by killing Jim's loved ones. Strickler then arrives with Angor's eye to assist Jim. Strickler informs Jim that he can use the eye in his amulet, which gives him extra power in his armor and fighting.

Jim takes Strickler to the Gyre, where the two have a heart-to-heart conversation about Jim's destiny as the hero and Stickler's reformation. Before going their separate ways, Strickler gives Jim the last Triumbric Stone to defeat Gunmar, both as a sign of eternal friendship and proof that he has truly reformed. Jim also realizes that if he kills Gunmar, he will free all of the familiars and Strickler will be trapped in his monster form permanently.

Angor arrives in Trollmarket and starts attacking all the inhabitants with his Creeper Sun curse.  Jim tries to fend off Angor, but he is no match. Just when Angor is about to attack Jim, AAARRRGGHH!!! intervenes and defends Jim, which also triggers the curse and turns both Angor and AAARRGGGHHH!!! to stone. Furious, Toby smashes Angor to bits, defeating him. When the Trollhunters see the remains of their friend, Jim feels guilty and decides to go into the Darklands on his own. Despite the protests from his friends, Jim enters the Darklands to find Claire's brother, not taking into consideration the consequences, leaving the rest of the Trollhunters to cover for him on Earth. 

Part Two

Welcome to the Darklands (non-canon novel)

This article is not related to the extended canon Tales of Arcadia continuum. That means the information in this article isn't considered part of the official Tales of Arcadia universe.

As soon as Jim enters the Darklands, he finds himself in a whole new world. He searches for the nursery but does not have any luck doing so. He starts to worry about his friends and his mother back home and starts to think he should have brought some food and water with him for the trip. Jim then steps into a clearing and sees a sleeping Gumm-Gumm. While Jim tries to sneak past him, some a tiny rock hits the Gumm-Gumm on the head, waking him up. Jim quickly hides from the Gumm-Gumm and waits until he falls asleep. As soon as the Gumm-Gumm falls asleep, Jim gets out of his hiding place and decides to rest. When he feels some heat, he starts to think that the armor has given him a blanket, when it turns out to be a sentient fireball. The fireball introduces himself as, "Rob the Unending Fire" and the two instantly bond after a discussion of their favorite movie. Rob offers to guide Jim throughout his journey to the nursery.

Rob takes Jim to a maze, but the Trollhunter only ends up getting lost. Jim gets angry and starts blowing up at Rob for his incompetence. When Rob explains how lonely he is in the Darklands, Jim apologizes for his outburst and tells Rob on how he doesn't want anyone to help him get Enrique back or any emotions to cloud his thoughts. They continue their journey through the Darklands when suddenly, a Nyarlagroth arrives and starts circling them. Rob tries shooting fireballs at the Nyarlagroth, but it turns out that Nyarlagroth's are fireproof, so the two start running away. They reach a dead end and Rob mysteriously vanishes. Jim tries to summon his Glaives, but he is too frightened to do concentrate and blacks out.

Jim wakes up to find the Nyarlagroth knocked out cold. He finds out that the person who defeated it is a female Gumm-Gumm named "Skarlagk the Scorned, daughter of Orlagk" who offers to help him defeat Gunmar, making Jim faint again.

Jim eventually wakes up and finds himself riding on another Nyarlagroth with Skarlagk. She takes the boy to the resistance, filled with rebellious Gumm-Gumms and tamed Nyarlagroths. They arrive at the mess hall with the other Gumm-Gumms for some food, but of course, Jim doesn't take too kindly to Troll food. Jim follows Skarlagk to her chambers, where she begins to explain that Gunmar had killed her father when she was sixteen in human years and asks Jim to help the resistance to destroy Gunmar before he destroys the rebels and Jim's loved ones. Jim ponders this for a minute and agrees.

Hours later find a small room containing some strange stones that Skarlagk has apparently dug up. He finds an emerald-like crystal and inserts it in the place where his amulet used to be, and the armor starts to glow green but changes immediately back to red. Before Jim can ponder this conundrum, Rob barges into the room, ready to throw flames at Jim. The Trollhunter demands to know where Rob has been, to which the fireball replies that after they got separated in the maze, Rob retraced his steps, found the Nyarlagroth and followed the slime trails to the resistance.

Trapped in the Darklands

Eventually, Jim starts going crazy from being all by himself and staring at the drawing of his friends for around a month or so. Jim finally arrives at the nursery where he finds Enrique, sleeping in his cradle like a baby. Just when Jim can leave with the baby, some goblins catch him, but Jim manages to outsmart them. Unfortunately, the Gumm-Gumms catch Jim and start to chase after him. Before Jim can enter the portal back home, the Troll Tribunal starts to destroy the bridge. Enrique makes it back to Earth, but Jim becomes captured by the Gumm-Gumms. 

Jim is taken by Dictatious, who brings him to Gunmar's throne. He begins to fight the soldiers, which intrigues Gunmar, who easily beats him in battle. Gunmar orders the soldiers to take Jim to a prison cell, where he is thrown in next to Normura (who got imprisoned for failing Gunmar). He decides to try to escape, but Nomura expresses her doubt and hopelessness, but Jim assures her that his friends will come for him, despite the bridge being gone. He also tells her that he will help her escape as well. Together, they share idle and witty conversation, which helps them bond. 

Later, Dictatious and the Gumm-Gumms to gloat over taking Jim and Nomura to the Gunmar's command deck for the battle. When they leave, Claire, Toby, and Chompsky arrive to break Jim out of his prison. Before they can break him out of his cell, the Gumm-Gumms arrive and take Jim to Gunmar's command deck for the fight. Nomura and the reluctant Jim begin fighting, but Gunmar becomes very impatient and wants the Trollhunter to do away with Nomura. While he gains the upper hand, Nomura still expresses her doubts and starts to overpower Jim when his armor becomes useless. Before she can kill Jim, Gunmar stops her and tells her to let him finish off the Trollhunter himself. Before he can do that, Toby and Claire arrive. Upon seeing this, Gunmar realizes that the Killahead Bridge is open and sends his henchmen after them. 

The four then arrive at the exit, but find that it is locked. While Nomura uses a Stalkling to distract Gunmar and his minions, Claire uses the Shadow Staff to open the door. Using Nomura's "Darklands smarts" and combat abilities, they manage to dodge several obstacles. Unfortunately, they also run into Gunmar, who has become even more vengeful for Nomura's trechery. When the Gumm-Gumms seem to have overpowered Nomura, Draal arrives with the Grye and manages to stop the Gumm-Gumms. The kids, Nomura, and the trolls hop in the Grye and drive back to the bridge's portal. Luckily, they manage to escape right before the portal closes. They all congradulate themselves for their daring escape and head home together. Unbeknowest to them, Gunmar, Dictatious and some goblins have escaped as well. 

Appearance

In his human form, Jim was a tall, slim young man of fifteen (later, sixteen), with blue eyes and short dark brown hair. He wears a blue zip-up jacket with the sleeves rolled up to his elbows, and a white shirt underneath. He has blue jeans and blue and white sneakers.

In his troll form, Jim's skin pigment became blue, his hair became unkempt, he got two lower fangs, large horns, yellow sclera, pointy ears, and his right hand became bigger and lost its pinky finger, becoming more troll-like, while his left-hand remains human but armored.

While using the Amulet of Daylight, Jim wears a silver suit of knight's armor, complete with breastplate, pauldrons, blue trimmings, greaves, and sabatons. Underneath the armor, he wears a sort of black undershirt, although this inner layer has never been fully shown. While wielding the Amulet of Eclipse, this armor is black with red trimmings. Both armors have their respective amulets mounted on Jim's left chest and their swords stowed on the backs of the armors. The armor becomes permanently attached to his body after being transformed into a troll.

Personality

At the start of the series, Jim was shown being the caretaker around the house, cooking meals for himself and his mother, Barbara Lake. Despite it being Barbara's job to take care of him, he likes taking care of her because of how much work she does as a doctor. He is also shown to have a reputation for being an all-around swell guy, though it is implied this is just to get people to like him.

Jim can get nervous often, as he didn't want to accept his new position of the Trollhunter, having never been in a fight before, or was too nervous to ask his crush, Claire, to the dance. However, when he perseveres and tries, despite his fear, he can succeed in his job which proves how brave and hard-working he is. After getting used to being the Trollhunter, he was braver than ever, such as fighting Bular and the Changelings. Jim was also reluctant to kill people as part of his job, but when he started gaining more self-defense instincts, he became brave enough to do it.

Jim is very overprotective of his loved ones, to the points where he might be considered incompetent. To keep his loved ones safe, like his friends Toby, Claire, Blinky, Draal, AAARRRGGHH!!!, or his mom, he will often try to keep them out of a fight and finish it alone, even though it usually does more harm than good.

Another sign of his over-protectiveness is that he's willing to lie to his mom to keep her from worrying about him. Jim kept it a secret, but he didn't keep it hidden because Barbara was fully aware of Jim's lies and kept demanding him to tell the truth, but Jim kept lying to protect her, despite it only straining their relationship even further and putting Barbara in danger. 

He's definitely willing to keep lying for his loved ones' safety no matter what the consequences are, even when they spoil his "good boy" reputation toward the people he knows like his teachers, Claire, and especially his mom. Most of all, when his mom finally found out he is the Trollhunter, she had her memory erased and she made him promise to tell her again later. Jim did promise, however, he chooses to break his promise again so she wouldn't worry, even though lying is what caused her to nearly die in the first place. Despite being overprotective and a little bumbling, he knows when he can't accomplish things without help from his team.

Jim is also a bit of the jealous type since he hated it when Douxie was flirting with Claire and she giggled at his witty comments. 

When Merlin had Jim change himself into a half-troll, he was reluctant because he would lose half of his humanity forever. After a little consideration and reflections on all he had been through, he willingly turned himself into a troll hybrid. Initially, Jim enjoyed his new feral state and abilities, but then he became depressed when he found out that he couldn't go into the sunlight, eat human food, or go back to school. He felt as if he could never be with his loved ones again and was to remain a monster forever. He was then reminded by his loved ones that he could still have an exciting life, despite it no longer being a normal one. 

Abilities

Trollhunter

After being chosen by the Amulet of Daylight, Jim is able to summon the sword Daylight and his armor by chanting "For the glory of Merlin, Daylight is mine to command!" Jim is able to manipulate the armor any way he desires, such as causing his sword to return to his hand in combat or switching hands, or summoning one of the alternate weapons provided by the armor. Sometimes, he is shown activating the amulet without speaking the incantation. The Armor, however, now has permanently attached itself to his body, since he had it on before he transformed. 

Enhanced Strength and Durability

Thanks to the Amulet of Daylight, Jim is slightly stronger and more durable than an average human. He has been seen taking hits that would have almost certainly broken an ordinary person's bones, as well as withstanding Bular's crushing grip. Jim has even withstood a high-altitude lightning strike, which was sufficient enough to kill a Stalkling and would have severely injured if not killed an ordinary human. When he became a troll, these abilities became enhanced. 

Cooking

Jim is an accomplished cook, making meals for himself and his mother while she works since she is a terrible cook herself. Toby and Mr. Strickler have both praised his cooking.

Swordsmanship

After training with Draal, Jim is an accomplished swordsman, able to hold off Nomura, Strickler, and even Bular himself. Jim's fighting style is somewhat chaotic, but he uses his agility to outsmart larger and stronger foes and get behind their guard. Jim's proficiency has extended beyond Daylight as well, as he is able to parry Angor Rot's attacks with his newly discovered daggers and even hold off Nomura using a frying pan in his house.

Martial Arts

Although Jim had no formal training in martial arts, he was instructed in the art of hand-to-hand combat by Blinky and Draal. While he relies on his sword for most attacks, Jim has been shown to improvise punches and kicks in combat and was even seen knocking out Steve Palchuk with one punch.

Tactician

As the de facto leader of his Trollhunters group, Jim is usually the one who comes up with the group's strategies. Although his plans have been foiled, such as when Strickler anticipated his attempt to send Toby, Blinky, and AAARRRGGHH!!! into his office, Jim has a knack for improvising situations to complete his missions.

Charisma and Compassion

It has been stated by others (Blinky in particular), that Jim's greatest strength is his humanity and love for others, no matter the cost. It has allowed him to inspire other to find greatness in themselves and come to his aid whenever possible. Even some of his enemies have been inspired by his sense of honor, like Strickler and Nomura. Even after becoming half-troll, it appears that this trait has not diminished, when through reminding Angor Rot of the hero he used to be before becoming Morgana's slave, convince him to turn against her and give the Trollhunters the opening they need to seal her away.

Hybrid Form

After using Merlin's potion, Jim has become a hybrid of Human and Troll, which granted him greater strength, durability, stamina, and agility, to the point that he could defeat Angor Rot and Gunmar simultaneously.

However, the transformation also came with downsides, such as Jim can no longer walk in the daylight without being burned, he can't eat human food, and was initially prone to feral instincts.

Equipment

Amulet of Daylight

The chief weapon of Trollhunters, the Amulet of Daylight called out to Jim in the voice of Kanjigar and chose him as the first ever human Trollhunter. By chanting "For the Glory of Merlin, Daylight is mine to command!" Jim can encase himself in a medieval knight's armor, complete with the Sword of Daylight. The sword is harmful to trolls, vaporizing them on contact and blinding them with its presence. The amulet itself lets Jim translate Troll into English and vice versa, and it will return to Jim if separated, as seen when he tries to dispose of it early on and later when it escaped the clutches of Strickler and Bular. The amulet can be opened and upgraded with special stones, including the Triumbric Stones and the Eye of Angor Rot.

Amulet of Eclipse

A new amulet that summons black armor and the black sword Eclipse. Eclipse's capabilities are currently unknown, but it can be assumed that its basic qualities are similar in nature to that of Daylight. This amulet is activated with the incantation: "For the Doom of Gunmar, Eclipse is mine to command!"

Bike

Jim's bike is his primary form of transportation in Part 1, and his main way of getting to and from school. Jim uses the bike to escape from foes including Bular and the Stalkling. After he receives a Vespa on his 16th birthday from Blinky, the bike is no longer used.

Vespa 150 G.S.

Jim's Vespa 150 G.S. was a birthday gift from Blinky and Jim's most desired birthday present. The scooter is Jim's primary form of transportation and seats 2, with Toby Domzalski and Claire Nuñez being its most common passengers. Merlin later dismantles Jim's Vespa and uses its parts to create suits of armor for Claire and Toby.

Relationships

Toby Domzalski

“Sure, I did. You had no problem sneaking into the Darklands when it was to save Claire’s brother, but now that Kanjigar says you’ve got to face Gunmar, you’re having nightmares about him and are freaking out that you’re way out of your league. I can multi-task, Jimbo! -Toby to Jim in "Mudslinging"

Toby and Jim pose

Toby Domzalski is Jim's best friend and "sidekick". He really loves tacos and has a crush on the school mascot (later revealed to be Darci Scott). He is always by Jim's side during battles. It is noted that Toby likes to be the only one at Jim's side. In the episode Airheads, he is seen arguing and competing with Claire Nuñez for the position of Jim's sidekick.

At the end of the series when Jim leaves Arcadia for good, he gives Toby his job as the city’s protector and promises to contact him whenever he can.

Claire Nuñez

"You mean WE are gonna find him... together." -Claire to Jim in "The Battle of Two Bridges"

Jim and Claire Kiss

At first, Jim merely crushed on Claire from afar and she tolerated him at best until he attempted to woo her with quickly learned Spanish and she invited him to audition for the school play, Romeo, and Juliet. Although he didn't actually want to act, he auditioned to convince Strickler that the armor was for the play. However, due to his tardiness and absence from several rehearsals, their relationship begins to turn sour. After a last-minute attempt to win back her trust, he agrees to babysit her little brother, Enrique, who is actually a changeling, who they dubbed as NotEnrique. After causing a mess in her house, she says she hopes to never see him again. Before he and Draal have their to-the-death rematch, he leaves her a letter, confessing all of his feelings and what has been going on with him. She forgives him, thinking it's metaphorical, but then grows suspicious and, after NotEnrique endangers her and she learns the truth of his new double life situation, the two grow closer as she joins in on the adventures, and prepare to go to the Spring Fling together. They ultimately decide to skip the Fling, and instead dance near a cliff overlooking the city, almost kissing.

During part two, Claire is determined to rescue Jim from the Darklands after he saved Enrique first. After everyone manages to get him back, Claire hugs him saying that she misses him and they both share a kiss. After an unconventional barbecue at her parents' house, Claire finally calls Jim her boyfriend and says that she does not care that her parents disapprove of it, officially becoming a couple.

In Part Three, their relationship starts to grow when Jim becomes jealous when Douxie starts flirting with Claire. He also does everything in his power to free Claire from Morgana’s control. After turning into a half-troll permanently, Jim becomes extremely depressed over what he has lost with one of them being unable to marry Claire and have children. However, Claire proves her eternal love for him by staying by his side, hugging him when he is believed to be dead, and even deciding to go live with Jim in the new Trollmarket.

Blinky galadrigal 

"Jim, dance like nobody is watching, and love like its never gonna hurt..." -Blinky, to Jim, in "The Shattered King."

Blinky is Jim's mentor and is very loyal to him. He calls him "Master Jim" and is often accompanied by his friend AAARRRGGHH!!!. Blinky helps with problems that Jim faces and looks up remedies to help him fight the rogue trolls and goblins. In later episodes of season 1, it is revealed by Stricklander in a fight with Jim that Jim sees Blinky as his surrogate father. Unfortunately, Jim doesn't necessarily think of Blinky as a good replacement for his birth father, due to Blinky being his trainer. Regardless, the two have shared multiple bonding moments that could hint at this dynamic, including building a Vespa bike together. This father-son relationship is finally established when Blinky comforts Jim when he becomes saddened by his new form. 

Draal the deadly 

"Fleshbag... Maybe you'll make a good Trollhunter after all. When that time comes, I will be proud to fight by your side." -Draal to Jim in "Win, Lose, Draal"

When first entering Heartstone Trollmarket, Draal goes to Jim, demanding that he prove he's the new Trollhunter. After donning the armor, Jim grows frightened of Draal once he learns that Draal is Kanjigar's son, the last Trollhunter, and believes he himself is the amulet's rightful heir. Saying it's "training", he challenges Jim in the Hero's Forge with Vendel watching. Jim quickly loses and this causes him to question whether the amulet chose correctly. After his doubt settles and with his confidence restored, he asks Draal for a rematch. However, he grows fearful again once it's explained that a rematch would be to-the-death. In their match, Jim, using the knowledge he gained from reading A Brief Recapitulation of Troll Lore, wins the match, but ignoring the chants of the other trolls, don't kill Draal and instead helps him to his feet. Draal, exiled out of shame, takes refuge in Jim's basement and vows to protect his house. He trains Jim how to fight and continues to live with Jim for the remainder of part one, even after he is welcomed back into Trollmarket.

In Part Two, Draal was taken over by Gunmar, and Jim was reluctant to fight him since their friends. Jim vowed to find a way to restore Draal’s free will.

In Part Three, when Draal was freed from his brainwashing, he helped Jim find Merlin's staff and the two started to work together better than before. Sadly, when Angor Rot and Gunmar arrived, a heated and quite violent battle occurred and Angor did away with Draal, who sacrificed himself trying to protect Jim. Jim felt depressed since this was the first everlasting death he had to deal with in his life. Luckily, Jim avenged Draal when he destroyed Gunmar and finally ended the Gumm-Gumm War.

Barbara Lake

“I want you to know something. Even before you found this amulet- way before all this- you were always my hero. My beautiful boy…” -Barbara, to Jim in "A Night to Remember"

After Jim's father left them around his 5th birthday, he and Barbara vowed to always take care of each other. To the present day, Jim has continued to care for his mother, kissing her goodnight, nurturing her when she was sick, as well as doing all of the cooking and cleaning in the house, even though it was Barbara who is supposed to care for Jim, making Jim somewhat of a mama's boy. 

When Jim became the Trollhunter and met his new trolls friends, he was determined to keep it all a secret from her just to keep her from worrying. Unfortunately, she got worried either way. After Jim gets more involved in his occupation as a Trollhunter, his mom grows more worried, as he's begun to return home at late hours, argue, and keep secrets from her. He expresses discomfort that he must do such things but continues to and heatedly tells her that he doesn't want her to see Mr. Strickler again after she invited him over for dinner, even though she's fond of him.

Their relationship continued to strain and only seemed to worsen (though somewhat repaired thanks to a temporarily humanized Blinky) until, while waiting for Angor Rot to enter his house, she comes home early. Unable to make up a lie in time, he quickly reveals the truth to her and after Mr. Stickler is injured, causing Barbara to receive the same injury due to their intertwined fates, he brings her to Trollmarket to heal her. Vendel tells him the only way for Barbara to heal properly is to unbind her from Mr. Strickler, however, she would also lose her memories in the process. Barbara begs several times for Jim to remind her of his life as a Trollhunter when she comes to and promises that he will. Once she loses consciousness, he rushes her to a hospital in the human world so she can heal properly. After she reawakens, she asks Jim what happened. Happily (because she wouldn't believe him), he lies and tells her that she was in an accident, breaking his promise.

In Part Three, Barbara’s memory returns and she confronts Jim for breaking his promise and worrying too much about her. She explains to him that parents have to protect their kids and be concerned, regardless of what they do. Jim finally truly realizes what has done wrong and agrees. After Jim is permanently transformed into a troll, Barbara is just as shocked and saddened by this as Jim himself. When Jim runs away after realizing all the disadvantages to his new form, she expresses her undying love for him and that he will always be himself, regardless of what he has become. When Jim leaves Arcadia with Claire and the trolls to find a new home, Barbara expresses reluctance to let Jim leave town, but he promises to contact her all the time. The two then share a tearful goodbye.

Eli Pepperjack

Ever since Jim stood up for Eli when Steve shoved him into a locker, Eli has been deeply devoted to Jim and was genuinely shocked when he and Steve assumed he was evil. When Steve and Eli helped Jim and the others help the trolls escape Gunmar, Eli said that he has a lot of questions for Jim. It is also shown that Eli believes Jim to be the best person in the world and idolizes him. However, in part two, he begins to have second thoughts when he and Steve start investigating some of the strange occurrences happening in Arcadia, in which Jim is connected. The duo initially believes that Jim is evil and planning to take over the town and try to stop him, but are soon proven that whatever Jim is involved in, he's not an enemy. Eventually, when Steve and Eli reveal that they knew about his life as a Trollhunter, Eli says that "[Jim] has a lot of explaining to do." It's unknown if Eli's aware of Jim's departure and transformation into a troll. 

Steve Palchuk

Since knocking Steve’s tooth out, Steve had spent a majority of the series trying to get revenge on Jim. When Jim entered the Darklands and the other Trollhunters told everyone he had a terminal illness, Steve knew it was a trick and decided to find out about what was going on. When Eli and Steve teamed up to investigate, they assumed that Jim was part of an evil supernatural plot, but eventually found out the truth. Since then, Steve has gained respect for Jim and gotten over his loss.

Strickler

At first, Jim favored Mr. Strickler and looked up to him as a sort of father figure. Even before he became the Trollhunter, Strickler is aware that Jim is overextending himself from taking care of his mother and struggling in class. As such, he calls him "Young Atlas." Jim even tries to convince himself that Strickler is not a changeling as he didn't want to accept the fact, until Bular calls him "Young Altas," a nickname only Strickler calls him as. After he learns that Strickler is a changeling, Jim instantly felt betrayed and lied to by his favorite teacher. His hatred for Strickler grows when he witnesses him going on dates with his mother and placed a binding spell on him and his mother (whatever harm comes to Strickler, will happen to Barbara).

However, when Angor Rot loses his soul and is in pursuit to kill Strickler, he begs Jim to protect him, though he was instantly reluctant. After Jim saves his and his mother's lives by undoing the binding spell, Jim starts to believe that Strickler was beginning to change his ways and earns his trust again. After Gunmar takes over Trollmarket, Strickler returns to Arcadia with Nomura so they could help train Jim.

Nomura

At first, Jim and Nomura saw each other as enemies with Nomura mocking him as a fake. However, after meeting each other in The Darklands under the captivity of Gunmar, they begin to form a friendship and even help each other escape The Darklands together. After which, Nomura thanks Jim for giving her hope and believing in friends. After Gunmar takes Trollmarket, she returns to Arcadia with Strickler to help train Jim.

Merlin

Jim had an awkward first impression when he finally meets the wizard who created his amulet. When Jim learns that his mother was captured by the Gumm-Gumms along with Strickler, Merlin prevents him from finding them, much to Jim's disbelief. He becomes convinced that Merlin only wants his magic back and begins to fight back against Merlin, only to be easily outmatched by the wizard himself while they had a tense argument. Merlin tensely tells Jim that his humanity and Eclipse blade will not be enough to end the Gumm-Gumm War, unless he becomes more than human. Merlin creates a potion that will transform Jim into a human-troll hybrid, but he warns that the changes will be irreversible, and he leaves Jim with a choice to either remain human or forever become a "true" Trollhunter, leaving his old life behind.

After sealing away Morgana, Merlin (with his magic restored) thanks Jim and his friends and helps lead the trolls to a new Heartstone in New Jersey.

Morgana Le Fay

"Behold, Trollhunter, the beauty of the Night Eternal!"

"Can't say I'm a fan."-Morgana and Jim during their confrontation in "The Eternal Knight Pt. 2"

Jim was instantly unaware of Morgana's existence, until the sorceress possesses Claire and tries to kill him. During their confrontation face-to-face, Jim argues why she hated him on sight, even though he has done nothing to her. To which, Morgana spitefully reveals that Merlin took her left hand so he could make the Amulet of Daylight and mercilessly injures him.

Episode Appearances

Trollhunters Part 1
"Becoming: Part 1" Appears	"Becoming: Part 2" Appears
"Wherefore Art Thou, Trollhunter?" Appears	"Gnome Your Enemy" Appears
"Waka Chaka!" Appears	"Win Lose or Draal" Appears
"To Catch a Changeling" Appears	"Adventures in Trollsitting" Appears
"Bittersweet Sixteen" Appears	"Young Atlas" Appears
"Recipe for Disaster" Appears	"Claire and Present Danger" Appears
"The Battle of Two Bridges" Appears	"Return of the Trollhunter" Appears
"Mudslinging" Appears	"Roaming Fees May Apply" Appears
"Blinky's Day Out" Appears	"The Shattered King" Appears
"Airheads" Appears	"Where Is My Mind?" Appears
"Party Monster" Appears	"It's About Time" Appears
"Wingmen" Appears	"Angor Management" Appears
"A Night to Remember" Appears	"Something Rotten This Way Comes" Appears

Trollhunters Part 2
"Escape from the Darklands" Appears	"Skullcrusher" Appears
"Grand Theft Otto" Appears	"KanjigAAARRRGGHH!!!" Appears
"Homecoming" Appears	"Hiss Hiss, Bang Bang" Appears
"Hero with a Thousand Faces" Appears	"Just Add Water" Appears
"Creepslayerz" Appears	"The Reckless Club" Appears
"Unbecoming" Appears	"Mistrial and Error" Appears
"In the Hall of the Gumm-Gumm King" Appears

Trollhunters Part 3
"Night Patroll" Appears	"Arcadia's Most Wanted" Appears
"Bad Coffee" Appears	"So I'm Dating a Sorceress" Appears
"The Exorcism of Claire Nunez" Appears	"Parental Guidance" Appears
"The Oath" Appears	"For the Glory of Merlin" Appears
"In Good Hands" Appears	"A House Divided" Appears
"Jimhunters" Appears	"The Eternal Knight: Part 1" Appears
"The Eternal Knight: Part 2" Appears

Trivia

• Jim always wears two outfits in the whole series: his day attire and his armor.
  • His eclipse armor doesn't really count as they are from the same source.
• He is the first human Trollhunter.
  • He is also the first ever half human, half troll mutant.
• He is an excellent cook.
• Jim is ambidextrous.
• In the books, Jim's last name was "Sturges", which meant "Warrior" and he came from a family of Trollhunters.
• Jim Lake Jr. is the last character Anton Yelchin ever did before his death on June 19, 2016.
• In "Bad Coffee", Anton only does Jim's voice when he and Strickler are sparing. After inhaling the ashes, Jim's voice permanently changes to Emile Hirsch.
  • This not only means that these were all the lines that were recorded from Yelchin before his death, but also that the dust may have done permanent damage/transformation to his larynx. 
  • This scenario is similar to Teenage Mutant Ninja Turtles 2012:
    • Leonardo wakes up from a coma after narrowly surviving a deadly battle with The Shredder just before the Kraang conquered New York City. As of that moment, his larynx (among other things) have suffered enough damage to the point where Jason Biggs has been replaced with Seth Green for his voice over role, just as Hirsch replaces Yelchin. 
• Having become a human/troll hybrid, Jim is now burned by exposure sunlight, though it is uncertain whether or not the sun can turn him to stone like the other trolls.
• His most human feature after being turned into a troll is he still has red blood as shown in "The Eternal Knight: Part 2".

Gallery

The image gallery for Jim Lake Jr. may be viewed here.