Fan Casting Walter O'Dim in Ron Howard's Dark Tower: The Gunslinger

A sorcerer without conscience, Walter is the chief servant of the Crimson King, charged with bringing down the Dark Tower and collapsing all worlds into chaos. He wears the face of a handsome, charming man, but his eyes are empty pools reflecting nothing but his own amusement. He delights in cruelty, treating the destruction of universes like a game. He has crossed paths with Roland many times, leaving a trail of corpses and broken lives. He views Roland's obsession with him as a pathetic joke—but he has also grown wary of the Gunslinger's persistence.