High Quality Content by WIKIPEDIA articles! Walter "Walt" Dohrn (born 1970) is an American writer, director, artist, actor, animator, musician, screenwriter, and voice artist. He is best known as the voice of Rumpelstiltskin in Shrek Forever After. He also provided the voices of a van student, Xavier, Principal Pynchley, a nanny dwarf, an evil knight, and a singing villain in Shrek the Third. He was also the voice of Doodlebob in the SpongeBob SquarePants episode "Frankendoodle."