Part of Papo's fantasy world figures, Cerberus is based on a Greek myth. This very unattractive three-headed dog is often referred to as the hound of Hades, guarding the gates of the Underworld to prevent the dead from leaving! According to mythology, he was the offspring of the monsters Echidna and Typhon, and often described as having three heads, a serpent for a tail, and snakes protruding from multiple parts of his body.