|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.|
The Gumm-Gumms are distinguished by their black-colored skin, their large size, and their glowing eyes. The Gumm-Gumms live only to fight and murder and are the enemies most feared by the other Trolls.
In zombie form, they have white eyes and some have missing limbs. According to Aja, they smell worse than a Durian.
It seems that a troll can actually change into a Gumm-Gumm as seen when Krubera trolls can become a Gumm-Gumm, like AAARRRGGHH!!!, and Dictatious. Physical changes can be seen when AAARRRGGHH!!! becomes violent and looks more similar to Gumm-Gumm trolls.
The Gumm-Gumms were originally just unorganized tribes of barbaric trolls, until Gunmar killed their original king, Orlagk, and took control while banding them together into a fearsome army. Their main goal is to take control of the surface and devour all of mankind.
They were sealed away into the Darklands by Deya the Deliverer and yearn to wage war with Earth and conquer it. The only Gumm-Gumm Troll that avoided imprisonment the Darklands is Bular, son of Gunmar, who then laid a scheme to free his father and his armies.
After the defeat of Gunmar in "The Eternal Knight: Part 2", the energy released from his own body destroyed all the Gumm-Gumms in Arcadia.
However, as seen in "Race to Trollmarket", it is discovered that several of them survived on the dead Heartstone as zombies, but most were destroyed by Aja, Krel, Toby, AAARRRGGHH!!!, General Morando and his Omens.
Powers & Abilities
Gumm-Gumms possess the same weaknesses as the good trolls, like their vulnerability to direct sunlight.