Suggestions by @itsame_andrew

Awkwafina

as Ms. Nomura in Trollhunters

Benedict Cumberbatch

as Mr. Strickler in Trollhunters

Anne Hathaway

as Barbara Lake in Trollhunters

Mark Ruffalo

as AAARRRGGHH!!! in Trollhunters

Richard Madden

as Draal in Trollhunters

Jeremy Ray Taylor

as Toby Domzalski in Trollhunters

Xochitl Gomez

as Claire Nuñez in Trollhunters

Samuel Faraci

as Jim Lake Jr. in Trollhunters

Darren Criss

as 'Dylan' Potamoi in The Chronicles of Albion

William Gao

as Amarok Silverback in The Chronicles of Albion

Cress Williams

as Omar Yoruba in The Chronicles of Albion

Claudia Jessie

as Lyra Morningstar in The Chronicles of Albion

Kizzy Edgell

as Dianthe Keyrona in The Chronicles of Albion

Seth Green

as Gianluca 'Thorne' Asellio in The Chronicles of Albion

Ian Nelson

as Fionn Wytte in The Chronicles of Albion

Joseph Morgan

as Faelin Araxyan in The Chronicles of Albion

Dylan O'Brien

as Wilhelm Grimm in The Chronicles of Albion

Lucas Zumann

as Jacob Grimm in The Chronicles of Albion

Nina Dobrev

as Nimueh in The Chronicles of Albion

Joe Locke

as Merlin in The Chronicles of Albion