Canserbero Es Épico Vídeo Oficial YouTubeCerberus' hound is a mythical beast in Greek legends. Its portrayal often shows it as a multi-headed canine guarding the gates of Hades. According to some legends, Cancerbero has three heads, while in others it can have a maximum of nine separate heads. The term "cancerbero" is additionally used to refer to a fierce and unyielding guardian.