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
Orpheus in the Underworld great length, describing – and poking fun at – all his mythological affairs. However, little further progress can be made before news of Orphée's arrival forces the gods to get onto their best behaviour. Pluto is worried he will be forced to give Eurydice back, and, after a quotation from Gluck's "Orfeo ed Euridice" sends the gods to tears, Jupiter announces that he is going to Hell to sort everything out. The other gods beg to come with him, he consents, and mass celebration breaks out at this holiday ("Gloire! gloire à Jupiter"). "Scene 1" Eurydice is being kept locked