Shingetsu

Shingetsu (シンゲツ) is the clan leader of the Space Demon Clan Kamui Tribe, and is the first sworn enemy and rival to the main protagonist, Goro Izumi in Metroid: Kamen Rider Generations Vol. 3: Fates Intertwined.

Personality
Shingetsu regularly disdains and resents Goro's interferences with his clan's affairs, often fleeing instead of further justifying or persuading the player of the Kamui Tribe's sincerity. Despite his affably evil traits, Shingetsu is a firm believer of Social Darwinism, he believes that the weak must be purged from the universe to make way for those who have the power to dominate over those he deems inferior; which explains the reason why Shingetsu wants to claim the for his personal glory, believing that he has the right to use its power to rule over all. As the ruthless clan leader of the Kamui Tribe, he tolerates no failure and he's willing to dispose them if necessary.

Portrayal
Shingetsu is portrayed by Wataru Kuriyama (栗山航), best known for his role of Ryuga Dougai in Garo ~ Yami o Terasu Mono ~ and Garo: Gold Storm - Sho.

Etymology
Shingetsu translates into "new moon", this is fitting because he fights Goro during night time.