Professor Balls, nicknamed Dr. Balls, is a supporting ally to Clouseau, appearing in "Revenge of the Pink Panther", "Trail of the Pink Panther", "Curse of the Pink Panther" and "Son of the Pink Panther". He is played by Graham Stark, who played numerous characters in the films, in "Revenge" and "Son", and Harvey Korman in "Trail" and "Curse". In "Curse of the Pink Panther", Balls, Martha and Cunny are visited by Clifton Sleigh on his mission to find Clouseau and the Pink Panther diamond. Balls tries to scam Sleigh into buying all sorts of needlessly expensive items.