So Hercules could kill the nine-headed Hydra by himself (in Once) but not Rover?
In mythology he’s not even supposed to kill Cerberus. Just capture him. And he did it by making a deal with Hades and then rendered Cerberus unconscious with his hands. When Herc returned to the land of the living to give the king (who had put the labor to him) the dog, the King begged Herc to return Cerberus home because big bad scary puppy dog.
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"He was a lot of things to me" "The only conclusion was love"