Marik Ishtar

Marik Ishtar (マリク・イシュタール Mariku Ishutāru) is the leader and founder of the Rare Hunters, younger brother of Ishizu Ishtar and heir to the Tomb Keepers. Marik was formerly the main antagonist of the Battle City arc. After the defeat of Odion, Marik's alter ego, Yami Marik takes over his body and replaces him as the series' main antagonist.