I'm not known for my respectful ways, suffice it to say. But yes, I suppose I read into your message, and for that I offer an apology.
He is not Sisyphus, nor is he any normal mortal by any means. He has been raised and molded, carefully created to be that which he now is. His temper tantrum will not go unnoticed or without due punishment, I can assure you of that.
Our fallen King has returned to his higher form, in part. He has elected to become a daemon, a teacher of Man, instead of the demon he was, and the angel he was created to be. If you wish to speak to the reason this boy has power at all, I believe he's in Uruk, with my sister.