The more plausible logical deduction is that Hades is the reincarnation of an Ancient God who mastered the rules of death, just like Hela's father. Perhaps his birth was orchestrated by the Divine King.
However, as Noah said, there's no need to rush. Just wait for the result; it can't be interrupted halfway.
Noah and Iliad didn't have to wait too long; after just five days and six nights of deep transformation of the black cocoon, there came movement as the fragments began to fall away.
Eventually, a once again black feather ball emerged, just like when he was first born, without a hint of human form.
Yet, with experience, Noah led Iliad to continue waiting, watching as eight black wings unfolded to reveal a handsome, flawless teenager with black hair and golden eyes.
"You're not Hades! Who are you?"
