Fan Casting Hastur The King in Yellow (Voice) in Magical Beasts : To The Reconquest of Neverland

Powerful, enigmatic being, seemingly a member of the Great Old Ones, like Cthulhu, of whom he appears to be a "brother," or at least something very close to it. He's the reason Peter Pan fell into madness, manipulating him remotely to open a portal between his distant dimension and Neverland, which would be catastrophic for all of reality, so our heroes must stop him.