<P> Merlin is awakened, and Morgana is released from her prison by the Staff of Avalon . Barbara Lake recovers her memories of knowing about Trolls, forcing Jim and his friends to reveal to their families the truth . Angor Rot is resurrected by Morgana . Jim is irreversibly transformed into a Half - Troll with all the physical characteristics of a Troll . Morgana brings forth the Eternal Night so that she and Gunmar can invade the world . Jim and his cohorts fight and win the battle . Jim kills Gunmar, and Morgana is trapped in the shadow realm by Claire with help from Angor Rot, who realizes his true past . Merlin leads the Trolls to a new home in New Jersey . Jim and Claire say good - bye to their families and friends (including Toby) and leave with the Trolls . </P> <Ul> <Li> Anton Yelchin and Emile Hirsch as James "Jim" Lake Jr . / Trollhunter, the first human Trollhunter and a reluctant hero dealing with the pressures of leading a double life . He has a talent for cooking and eventually sword - fighting, and cares deeply for his mother and friends . Yelchin provided the voice for Jim from Part 1, through portions of Part 3 before he passed away . Hirsch assumed the role following Yelchin's passing . </Li> <Li> Charlie Saxton as Tobias "Toby" Domzalski, Jim's best friend and confidant . Dorky and excitable, he fully embraces the secret world of trolls and aids Jim in his quests . His weapon of choice is a warhammer . </Li> <Li> Jonathan Hyde as Walter Strickler, Jim's history teacher who is actually a Changeling . When Jim discovers the truth, he loses all respect for him and the two become bitter enemies . However, he remains affable toward Jim and has redeeming qualities . </Li> <Li> Kelsey Grammer as Blinkous "Blinky" Galadrigal, Jim's six - eyed troll mentor . A wise and scholarly troll with a heart of gold, he serves as the brains of the Trollhunters and eventually becomes a sort of father figure to Jim . </Li> <Li> Fred Tatasciore as Aarghaumont "AAARRRGGHH!!!", a burly troll and close companion of Blinky who forms a deep bond with Toby . He was kidnapped by the Gumm - Gumms as a child, which stunted his vocabulary . Tormented by the atrocities they committed, he deserted Gunmar to live a life of peace . However, he will still fight to protect those he cares about . </Li> <Li> Lexi Medrano as Claire Nuñez, Jim's girlfriend . She is a feisty, kind, jolly, sarcastic, curious, and intelligent tomboy who enjoys books and is a talented martial artist and gymnast . She obtains the Shadowstaff, a staff capable of creating portals activated by the user's emotions . </Li> <Li> Victor Raider - Wexler as Vendel, the leader of Trollmarket . An ancient and wizened troll, Vendel is at first suspicious of Jim and often comes across as a pessimist, but shows a softer side and eventual faith in Jim . At the end of Part 2, he is killed by Usurna after she revealed herself to be working for Gunmar, but not before recording the act to warn the Trollhunters . </Li> <Li> Ron Perlman as Bular, the son of Gunmar . A brutish and powerful troll warrior, he's obsessed with freeing his father from the Darklands . He holds a special disdain for Changelings, whom he considers "impure", putting him at odds with Strickler and other Changelings who seek to free Gunmar . He is killed by Jim in the first half of season 1, but later makes appearances in the season 1 episode "Where Is My Mind" and the season 2 episode "Unbecoming". </Li> <Li> Amy Landecker as Barbara Lake, Jim's protective and overworked mother . Her husband left the family when Jim was five years old . Her doctor job means she's often away from home, which lets Jim pursue his Trollhunter duties . </Li> </Ul> <Li> Anton Yelchin and Emile Hirsch as James "Jim" Lake Jr . / Trollhunter, the first human Trollhunter and a reluctant hero dealing with the pressures of leading a double life . He has a talent for cooking and eventually sword - fighting, and cares deeply for his mother and friends . Yelchin provided the voice for Jim from Part 1, through portions of Part 3 before he passed away . Hirsch assumed the role following Yelchin's passing . </Li> <Li> Charlie Saxton as Tobias "Toby" Domzalski, Jim's best friend and confidant . Dorky and excitable, he fully embraces the secret world of trolls and aids Jim in his quests . His weapon of choice is a warhammer . </Li>

Who plays jim in season 3 of trollhunters