General Hadias body resemble a large skeleton with black clothing and carries a scythe with his right hand. He has a similar appearance to the popular image of the grim reaper. One very noticeable aspect is that his left hand and head switch parts. The top head is constantly on fire with blue flames. The head has a very large jaw with very large pair of teeth. It also has green hair. If you look closely on the torn cloak you see see a pair of red eyes on his chest. For combat he is able to shoot fireballs from his mouth and use his scythe for melee attacks.
When Jun Hono in the Venus A managed to defeat a Warrior Beast, Hadias begins to combat her. He easily defeats her & shows his wicked nature by repeatedly slash the limbs of Venus A and continues striking while Jun survived when her Pilder fell out. He later meets up with the rest of the Mycenae forces at the Photon Power Lab to stop Koji Kabuto from getting the Mazinkaiser. But they fail as not only Koji pilot the Mazinkaiser but proceeds to destroy the Mycenae Empire. Mazinkaiser shoots his Reito Beam at Hadias where he was frozen solid then quickly crumple away dying.