Damocles

Spirit of Vengence According to legend, he was the revered leader of a vast Roman army. However, during a massive battle, his commanders turned and abandoned him. Standing alone and outnumbered by the hundreds, Damocles was easily slain with a spear through the heart. When he fell into the underworld, Nemesis, the goddess of revenge, was enraged at how the hero had been treated despite his bravery. Damocles transformed. She permitted him to come back to the Earth as a vengeful spirit - a ghostly, undead, black-armored centurion who would hunt down and kill each of the generals who had wronged him