Reiji Mizuchi (水地 零士, Mizuchi Reiji) is one of the primary antagonists in Beyblade: Metal Fusion. He is a member of the Dark Nebula, being their second most powerful beyblader after Ryuga. For the most part he was assigned to watching over Gingka to study his Pegasus. Later he takes part in the Battle Bladers Tournament where he follows a strategy of attacking opponents weakly to make them lower their guard and become vulnerable to the ultimate assult of his Poison Serpent SW145SD.