Do You Care Who Plays the Smaller Twilight Saga Roles? Filming for Eclipse is about to get started in Vancouver, but the cast is still being finalized. Today's news is that Jack Huston will join the gang as Royce King II, a rare human in the gaggle of vampires and werewolves. A man from Rosalie's prevampire life, Royce has a significant role in the book, but I can't imagine he'll get very much screen time.