Walter "Walt" Dohrn is an American voice actor, screenwriter, animator, television director and comedian. He voices the villainous Rumpelstiltskin in Shrek Forever After. He also played a Van student/Xavier/Principal Pynchley/a Nanny Dwarf/an Evil Knight/a Singing Villain in Shrek the Third. Dohrn has worked as writer and director of Season 2 of SpongeBob SquarePants.