ACHILLES
Achilles is the most famous of the Greek heroes of the Trojan War. His wrath with the consequences of it forms the subject of the Iliad of Homer.Greek mythology describes him as the son of Peleus, king of the Myrmidons and Thetis.
He was invulnerable except in the heel, at the point where his mother, during his infancy, held him as she dipt his body in the Styx to render him invulnerable.
Achilles killed Hector in the Trojan War, however, was critically injured in the heel, the part that remained vulnerable due to her mother held him by the heel in his infancy while plunging into the Styx, by the arrow shot by Paris and eventually died.