Koga Takuza was a legendary ninja who lived about 1500 years ago. According to the Shredder, Koga Takuza was a feared and powerful swordsman. He was capable of easily defeating every samurai he encountered with only his katana. Every time he killed his opponent, he would take their a piece of their armor as a token. After taking a certain amount of tokens, Koga then forged them together with an indestructible alloy that was said to be harder than steel. The helmet was then titled the Kuro Kabuto. After which, Koga created the Foot Clan. Koga would also wear the helmet to both let people know he's the leader of the Foot Clan, and to strike fear towards everyone he encounters.