Okay, Zeus. So here we have someone whose father wanted to kill him, and who later started a civil war among gods that led to the older and established gods being defeated. He had almost a hundred children, many of which were with humans but in some cases he did this in the form of an animal or something. He wasn't exacly moral by our standards, nor did all of his children turn out well. All in all, this isn't someone we want to return in the first place.
If we try to suggest this is a factual account, we have to assume that his father really did want him dead and he really did have a lot of questionable relationships. He was violent, and fickle, and unfaithful. His children were sometimes monsters. So... if he was an alien or other non-human creature, he was at best a charming Bond villain.
I don't see any sign of that. Zeus didn't ask for a simple majority vote, he did whatever he felt like. He was a monarch who secured his position through the use of force.