Kikuchiyo Firehand is the former sensei of the Ninja Clan which is now called the Green Tentacle. A mysterious contagion spread over the clan when Kikuchiyo was on his annual meditation on the mountain of tranquillity. He returned to find his clan “different” and a figure known only as the Swordmaster in charge. Kikuchiyo vows to find a cure for his clan and restore them to their rightful selves.
The Green Ninja is a figure of legend, he is thought to be the traditional spiritual guide for the Ninja Clan and is only ever seen when the Ninja Clan has veered off the path to enlightenment. It is therefore a sign that the Green Ninja has been sighted in Motor City where the Green Tentacle Ninja Clan now calls home.