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
What the Hell third week for sales of 35,000 copies, and in its sixth week, it has been certified Platinum for sales over 70,000 copies, and has been certified 2x Platinum in its 16th week, for sales over 140,000. "What the Hell" has been placed No. 1 in list of biggest hits of 2011 in Japan. With shipments, "What the Hell" sold an estimated 2 million copies in Asia. Even though it missed the top spot in Japan, it is the best selling Western single of 2011 there. It has sold more than 6 million copies worldwide, making it her second best selling