pistol, which allows him to perform the finisher. : Black RX's sleeker form that is also known as the , with increased speed at the cost of reduced resistance. In this form, he is armed with the sword, which allows him to perform the finisher. Like his previous form, Black RX has two different vehicles at his disposal: : Battle Hopper's upgraded form, created once Kotaro evolves from Black to Black RX which subsequently triggers its resurrection. Unlike its previous form, it is capable of speaking with its owner. Like Black RX, it can assume two different forms: , piloted by Robo Rider, and , piloted by Bio Rider. : A car created by Kotaro using some blueprints given to him by Prof. Walter, a scientist in one of the colonies the Crisis Empire set up. It is also the first car used as a vehicle by a Kamen Rider and was the sole exception until Kamen Rider Drive 25 years later. Kotaro Minami is portrayed by . Nobuhiko Akizuki was born on the day of a solar eclipse alongside his stepbrother Kotaro Minami, revered by the Gorgom as the heirs to their leader's throne: the Century Kings "Shadow Moon" and "Black Sun". Raised together, the two were like brothers. Once the two were of the ideal age, Gorgom captured them and infused them each with a King Stone. While Kotaro manages to escape with his memory intact, Nobuhiko's mind was wiped clean while left in a state of suspended animation before being finally reborn as Shadow Moon through the Stones of Earth, Heaven, and Sea. Shadow Moon sets up his regime as a general of Gorgom, serving as Black's nemesis and forcing him to fight him so he can become the new Creation King. In their final battle, Shadow Moon is weakened by Kamen Rider Black after the Satan Saber is used to slash his King Stone. Though he appears to die after being left inside the Gorgom headquarters when it explodes, Shadow Moon returns years later to seek revenge against Kotaro, who is now Black RX. However, he lost all of his memories related to Gorgom after its destruction. He is finally defeated by Black RX when he thrust the Revolcane through Shadow Moon's King Stone, destroying it once more. He turns back into Nobuhiko, renouncing his evil ways as he saved two children trapped in the explosive