Inspector Clouseau of the character. The film also introduces two of the series regular characters: his superior, Commissioner Dreyfus (Herbert Lom), who is driven mad by Clouseau's blundering of the investigation; and his long-suffering Chinese man servant, Cato (Burt Kwouk), who is expected to improve Clouseau's martial arts skills by attacking him at random. Sellers stepped away from playing the character following this movie, but returned in "The Return of the Pink Panther" (1975) and its sequels. When the character returned for the film "Inspector Clouseau" (1968), he was portrayed by American actor Alan Arkin; Edwards was not involved in this production.
The Pink Panther derives its name from the eponymous pink diamond that has an enormous size and value. The diamond is called the "Pink Panther" because the flaw at its center, when viewed closely, is said to resemble a leaping pink panther. The phrase reappears in the title of the fourth film "The Return of the Pink Panther", in which the theft of the diamond is again the centre of the plot. The phrase was used for all the subsequent films in the series, even when the jewel did not figure in the plot. It ultimately appeared in six of the eleven films.