Scientists examined x-rays taken of King Tut's mummy to attempt to determine his cause of death. Some suspected he was murdered, perhaps poisoned. But modern technologies like 3-D scanning eventually revealed that the powerful king was actually in poor health—and even had a broken leg.
Monsters are correlated with negativity, the evil inside of a person. The hero usually represents the will to fight back and keep that evil from hurting anyone. It's mostly opinion but that's just what I think I hope it gives you some ideas!