Marik Ishtar

Marik Ishtar (マリク・イシュタール Mariku Ishutāru lit. "Malick Ishtar") is the leader and founder of the Rare Hunters, younger brother of Ishizu Ishtar, the adoptive younger brother of Odion, and heir to the Tomb Keepers. Marik was the main antagonist of the Battle City arc, until the defeat of Odion when Marik's split-personality, Yami Marik, took over his body and replaced him as the main antagonist. Marik was eventually able to regain control of his body and destroy his other self once and for all, redeeming himself in the process.