Dio

Dio was built using the same specifications as Casshern. This shared origin fuels a deep grudge against his mechanical twin. Although both were originally sent with Leda to eliminate Luna, Dio's failure to reach her first has left him driven by a need for supremacy. He seeks to usurp Braiking Boss and command a massive robot army. To stop the ongoing destruction, he intends to expose Casshern's hidden past, motivated by intense jealousy over his rival's apparent immortality.