The D

The D, known in Japan as DD, was Aster Phoenix's legal guardian and the reigning champion of the Pro League for ten years. Sadistic and intelligent, The D serves as Aster's lifelong enemy due to the crimes he has to done to Aster's father. Although his actual appearance is short, through him, Aster was able to find out about The Light of Destruction and the cause for Sartorius' change in behavior. When the D's normal personality is in control, his hair is smoothed back and he has an almost permanent worried expression on his face, however when his split personality takes over, his hair b...