Charles F. Muntz is the main antagonist of Disney•Pixar's 2009 animated feature film Up. He is a famous explorer admired by Carl Fredricksen and his late wife, Ellie as children. In the movie, he found the bones of a tropical bird in South America, but the scientific community claimed they were fake, which lead to his disgrace. Insulted, Muntz searches the South American wilderness for a live member of the same bird species, traveling in a zeppelin with his many pet dogs, whom he equips with special collars he invented that enable them to speak. They are lead by Alpha and his assistants Beta and Gamma.