Cerberus

In Greek mythology, Cerberus (, Kérberos; Latin: Cerberus) is the monstrous, multi-headed dog that guards the entrance to the Underworld, preventing the souls of the dead from leaving. 

Often called the "hound of Hades", Cerberus was one of the numerous offspring of the monsters Typhon and Echidna; he is usually depicted as having three heads, along with a serpent for a tail.

Other websites

Category:Greek legendary creatures
Category:Afterlife
Category:Gods and goddesses of the underworld