Mark Hamill, Lena Headey, and David Bradley will lend their voices to the second season of Netflix's animated series Trollhunters. The series is created by Guillermo del Toro and DreamWorks Animation TV. The story revolves around the adventures of a boy named Jim in the hidden world of trolls. The voice cast of the first season will return (Anton Yelchin, who voiced the protagonist, had already completed the voice work for the second season before his death). The second season will be aired this year.