Kohgane (コウガネ, Kōgane)[1] is the main antagonist of Kamen Rider Gaim: Great Soccer Battle! Golden Fruits Cup!. He is the physical manifestation of the Forbidden Fruit who transforms into Kamen Rider Mars (仮面ライダーマルス, Kamen Raidā Marusu). After his defeat, he returned for revenge as Kamen Rider Jam (仮面ライダー邪武ジャム, Kamen Raidā Jamu, lit. Evil Warrior).