Fox's upcoming The Predator reboot has added a Game of Thrones star to its growing cast. Variety reports Theon Greyjoy himself Alfie Allen will portray an ex-marine in the film. Beyond that, there are no other details regarding his character and the reboot's mysterious plot. Allen joins a cast that includes Logan star Boyd Holbrook as the lead, along with Olivia Munn, Thomas Jane, Sterling K.