Rishid Ishtar

Marik's adoptive brother and the second-in-command of the Ghouls. Abandoned as a child, Rishid was taken in by Marik's mother prior to his birth. However, his father never accepted him as a suitable heir and treated him as a servant rather than a son. When Marik was born, his father told him to take care of his younger brother and Rishid stood by Marik's side, even when he turned to a life of evil. Marik had Rishid pose as him during Battle City, but he fell unconscious. He later awakened during the final battle between Dark Marik and Yugi, and helped Marik overcome his dark alter-ego and take back control of his body. (Source: Wikipedia)