From Monkey Island wiki
Bill Fettucini is one of the owners of The Fantastic Flying Fettucini Brothers Circus along with his brother Alfredo. He wears a purple costume and sports a moustache. He and his brother are always arguing. They will hire Guybrush to test out their cannon. His only appearance is in The Secret of Monkey Island, and he is voiced by Jess Harnell in the Special Edition.