When it was announced that Josh Boone would be directing the X-Men spin-off based on the New Mutants comics, two rumored names popped up and now it is made official.

Game of Thrones star Maisie Williams (left) and Split star Anna Taylor-Joy (right) have signed on to star in the film. Williams will play Wolfsbane, a young girl who has the power to turn into a wolf but at the same time struggles to reconcile her religious beliefs. Taylor-Joy will play Magik, a young mutant who is skilled at sorcery and travels via teleportation disks.

It was rumored that James McAvoy would return to the role of Professor X, but that is not the case.

More as this develops.

H/T: Dark Horizons