Wallace Michael Shawn (born November 12, 1943) is an American actor, voice actor, playwright, essayist and comedian who performed the voice of Rex in Pixar's first movie Toy Story. He reprised the role of Rex in Toy Story 2, Toy Story 3, Toy Story Toons, Toy Story of Terror!, Toy Story That Time Forgot and various video games and spin-offs. He was also had the role of Mr. Huph in The Incredibles.
Shawn has also had a number of roles in non-Pixar films, including Principal Mazur in A Goofy Movie, Wally Shawn in My Dinner with Andre, and Vizzini in The Princess Bride. He also had a role in Kung Fu Panda: Legends of Awesomeness as Taotie.