Walter Dohrn (born December 5, 1970) is an American writer, director, animator, musician, and voice actor. He performed the voice of Rumpelstiltskin in Shrek Forever After, as well as various characters in Shrek the Third. Dohrn has also worked as writer, director, and storyboard director in Season 2 of SpongeBob SquarePants, and he also worked on 2 episodes from Season 3.

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https://en.wikipedia.org/wiki/Walt_Dohrn