Canserbero Es Épico Vídeo Oficial YouTubeCerberus' hound is a mythical monster in Greek mythology. It is commonly portrayed as a multi-headed dog protecting the gates of Hades. In some myths, Cancerbero owns three heads, while in others it can have as many as nine separate heads. The term "cancerbero" is additionally used to refer to a vigilant and unyielding guardian.