Greek underworld his duty was to bring these souls to the underworld and no one would persuade him to do otherwise. Cerberus (Kerberos), or the "Hell-Hound", is Hades' massive multi-headed (usually three-headed) dog with some descriptions stating that it also has a snake-headed tail and snake heads on its back and as its mane. Born from Echidna and Typhon, Cerberus guards the gate that serves as the entrance of the underworld. Cerberus' duty is to prevent dead people from leaving the underworld. Heracles once borrowed Cerberus as the final part of the Labours of Heracles. Orpheus once soothed it to sleep with
Pluto (mythology) referring to the underworld as a place, and Pluto regularly invoked as the partner of Persephone. Five Latin curse tablets from Rome, dating to the mid-1st century BC, promise Persephone and Pluto an offering of "dates, figs, and a black pig" if the curse is fulfilled by the desired deadline. The pig was a characteristic animal sacrifice to chthonic deities, whose victims were almost always black or dark in color. A set of curse tablets written in Doric Greek and found in a tomb addresses a Pasianax, "Lord to All," sometimes taken as a title of Pluto, but more recently