Heracles was the illegitimate son (human son) of Zeus. Hera, Zeus's wife, was angered by Zeus's bastard child and drove Heracles crazy enough to where he killed his own wife and children. Heracles performs a number of amazing deeds to atone for his crimes. When he completes these deeds, he receives immortality and becomes a god
Ares the Greek god of war and battle and the instigator of violence, a son of Zeus and Hera. Because of his cruel and war-like nature he was despised by all the gods, even his own father disliked him. Ares could be bloody, merciless, fearful and cowardly and possessed no moral attributes. He was, however, unable to withstand the loveliness of Aphrodite, who subsequently became his consort
Asklepios was the Greek God of Medicine. This statue is housed in the State Hermitage Museum, St Petersburg, Russia. Asklepios was said to have been so powerful at medicine, "that he could bring the dead back to life".(www.theoi.com) Obtaining the ability to bring the dead back to life was a bad thing for Asklepios because once Zeus got news of this he killed Asklepios with a thunderbolt.