Mark Hamill and Lena Headey sertai Guillermo del Toro's Trollhunters series 

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Guillermo del Toro’s fantasy animated series about a normal boy who realizes he’s destined to become the protector of the troll realm that exists beneath his hometown is about to welcome some new stars.

Mark Hamill — critically acclaimed voice actor and Luke Skywalker himself — will join the show in season 2 as the older brother to a member of the Trollhunting team who’s on the side of the evil Gunmar. Cersei Lannister, a.k.a. Lena Headey, will be doing what she does best in a new role as a sorceress who’s “extremely powerful and evil.” And one more

alum will be joining the Netflix show: David Bradley, who played Walder Frey, will voice a mysterious wizard with unexpected powers.

The cast already includes Kelsey Grammer (who won an Emmy for his role as “Blinky”), Ron Perlman, Steven Yeun, and Anjelica Huston. The late Anton Yelchin voices series lead Jim. He recorded his role through season 2 before he passed away in 2016.

Trollhunters, a collaboration with DreamWorks Animation, originally premiered on Netflix on Dec. 23, 2016. Season 2 will debut later this year.

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