== Ansem the Wise, also known by his alias DiZ, was the ruler of Radiant Garden. He spent much of his time in his study, researching the mysteries of the heart. He first appears as DiZ in Kingdom Hearts: Chain of Memories and was revealed to be the infamous Ansem in Kingdom Hearts II.
The man who called himself "DiZ" and dressed his face in bandages to conceal it, now revealed to be none other than Ansem the Wise.
The true Ansem once studied hearts and the Heartless, but soon ceased his research for fear of disrupting the order of the worlds. But his apprentice Xehanort betrayed him, robbing Ansem of his discoveries and pride.
Since that time, Ansem was driven by vengeance -- but when he saw Riku go so far as to give up his physical form to help Sora, he had a change of heart