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Duncan, otherwise known as his nickname Furious D was a racehorse. Bart rescued him from a fair, where he was forced to jump off a diving board. He became a very successful racehorse at the Springfield Downs. After winning the race, he became a stud and lived with a female horse.
Behind the LaughterEdit
Duncan's vocal effects were provided by Jim Cummings. His nickname, “Furious D”, resembles the heavy metal rock band, Tenacious D.