Damocles was a brave Roman centurion.
According to legend, he was the revered leader of a vast Roman army. However, during a massive battle, his cowardly commanders abandoned him. Damocles was slain with a spear. Nemesis, the deity of revenge, was enraged at how he had been treated despite his bravery.
She permitted him to come back as a vengeful warrior a ghostly black-armored centurion who would hunt down and kill each of the commanders who had wronged him.
Many Roman commanders carry a dagger with the image of Damocles on the scabbard, which serves as a reminder to look after their men, or they would risk the Black Centurion to avenge their selfish mistakes.