A female samurai born in Japan amidst the "Crusades" during which millions of native Japanese people were killed by the Gears, leading to them being declared as an endangered species. During one of these attacks Baiken's parents were killed, she also lost her right arm (which she has since replaced with a claw) and left eye to the Gears responsible for the death of her parents. From that day forward Baiken swore revenge on the creator of the Gears, known only as "That Man".
