Mao Zedong was a Chinese revolutionary, politician, architect of the People's Republic of China, and Chairman of the Communist Party of China. He appeared in the Season Three episode, "Mr. Hankey's Christmas Classics".
He also appeared in the episode, "Do the Handicapped Go to Hell?", when Satan was hosting a Hawaiian party in Hell.
Like many real-life people featured in early seasons of the show, he was drawn with a real photo cut-out as a head.