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
Mythology of The X-Files aliens were not the central focus of the mythology, since many of the writers, most notably Frank Spotnitz, felt that the alien-conspiracy storyline had gone on long enough "and played itself out." The story arc would instead focus on what happened to Doggett's son, Luke, and the character of Reyes. For the tenth season of the show (which marked the revival of the series after fourteen years), a new mythology was introduced, and the Super-Soldier arc was ignored as was the supposed alien colonization, which didn't appear to happen in December 2012. The new mythology involved a conspiracy of men