Cerberus was the famous three-headed dog, pet of Hades, the god of the Underworld. He was standing guard at the Gates of the Underworld, making sure that no dead soul would escape and no living man would enter the realm of the dead. Besides his three terrifying heads, he also had a serpent for a tail. Only two heroes managed to defeat this monster; Heracles (Hercules) and Orpheus. Heracles managed to defeat him with his strength while Orpheus made him fall asleep with his music. Cerberus was a child of Typhon and Echidna. He had a brother from the same parents, a two-headed dog called Orthrus.
