Officer Brennan is a recurring character of Trollhunters and 3Below.

He is Detective Scott's partner and a member of the Arcadia Law Enforcement.


Trollhunters (Part One)

Trollhunters (Part Two)

Trollhunters (Part Three)

3Below (Part One)

3Below (Part Two)

Physical Description

Officer Brennan almost always has a slightly confused look on his face. He has a bulbous nose and a rather long face.

He wears a blue shirt with a name-badge on one side and the official badge of the Arcadia Law Enforcement on the other, along with a tie, navy-blue trousers, and a navy-blue jacket with a star badge on one arm.


He is a slightly incompetent and gullible, but well-meaning officer who tries his best to help maintain law and order in Arcadia. He greatly likes his job and often tries to help people in need, like when he called for a police car to assist Claire and Toby, who he thought was severely ill.



Detective Scott

Brennan is on good terms with friend and colleague, Detective Scott, and often assists him in solving cases and catching crooks.


Main article: Officer Brennan/Quotes

Episode Appearances

Trollhunters Part 1
"Becoming: Part 1"
"Becoming: Part 2"
"Wherefore Art Thou, Trollhunter?"
"Gnome Your Enemy"
"Waka Chaka!"
"Win Lose or Draal"
"To Catch a Changeling"
"Adventures in Trollsitting"
"Bittersweet Sixteen"
"Young Atlas"
"Recipe for Disaster"
"Claire and Present Danger"
"The Battle of Two Bridges"
"Return of the Trollhunter"
"Roaming Fees May Apply"
"Blinky's Day Out"
"The Shattered King"
"Where Is My Mind?"
"Party Monster"
"It's About Time"
"Angor Management"
"A Night to Remember"
"Something Rotten This Way Comes"
Trollhunters Part 2
"Escape from the Darklands"
"Grand Theft Otto"
"Hiss Hiss, Bang Bang"
"Hero with a Thousand Faces"
"Just Add Water"
"The Reckless Club"
"Mistrial and Error"
"In the Hall of the Gumm-Gumm King"
Trollhunters Part 3
"Night Patroll"
"Arcadia's Most Wanted"
"Bad Coffee"
"So I'm Dating a Sorceress"
"The Exorcism of Claire Nunez"
"Parental Guidance"
"The Oath"
"For the Glory of Merlin"
"In Good Hands"
"A House Divided"
"The Eternal Knight: Part 1"
"The Eternal Knight: Part 2"
3Below Part 1
"Terra Incognita Part One"
"Terra Incognita Part Two"
"Mind Over Matter"
"Beetle Mania"
"Collision Course"
"D'aja Vu"
"Flying the Coop"
"Party Crashers"
"Lightning in a Bottle"
"The Arcadian Job"
"Truth Be Told"
"Last Night on Earth"
"Bad Omen"
3Below Part 2
"Moving Day"
"Moonlight Run"
"Dogfight Days of Summer"
"Mother's Day"
"Ill Gotten Gains"
"There's Something About Gwen (of Gorbon)"
"Asteroid Rage"
"Luug's Day Out"
"The Fall of House Tarron"
"The Big Sleep"
"Race to Trollmarket"
"A Glorious End, Part One"
"A Glorious End, Part Two"



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Arcadia Oaks-pedia has a collection of images and media related to Officer Brennan which can be found at Officer Brennan/Gallery.
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