You are a cerberus. A cerberus is a massive, black, three-headed dog. In Greek mythology there was a cerberus that guarded the gates of Hades, near the river Styx. The cerberus represents all that is dark and evil. The cerberus stands for death, darkness, despair, and degradation. The cerberus is a fearsome creature that is intimidating and ominous. It is violent and ill-tempered.