Yukimura is the vengeful ghost of fear who's been known as the worst of the worst. Ages ago, the forefather of Hattori Kinzō's ninja clan, Hattori Hanzō, has imprisoned him in the Shinobi Village lands.
He first appears in the second episode of Mutant Turtles: Chōjin Densetsu Hen, Shugo Ju Korin: Metal Turtles Tojo!.