Katana

Katana appeared in 2005 TV series called Power Rangers S.P.D. Katana is an alien whose ship crashed in Kyoto Japan many years ago. He was found by a member of the Shinsengumi and trained to protect it from invaders. He is brought to the future through a time portal by Emperor Gruumm and is startled by the changes. Broodwing convinces him that the Power Rangers are his enemies, but he battles the Red Ranger and decides that he is an honorable fighter. Katana decides to return to the past through another time portal.

He is mentioned again in "Messenger Part 2" by Sky after he realized that the Omega Ranger had arrived around the time of their last encounter with him.