Yoshinori Katsuki is a Nintendo programmer who has been employed with the company since 1992, and has programmed a variety of games. Katsuki has been a programmer for several Metroid games. He was credited for Samus and tool programming in Metroid Fusion, and programming in Metroid: Zero Mission. Katsuki has an unused Super Metroid credit; the reason for its removal and its original placement is unknown.