Alien Nackle

Alien Nackle appeared in 1971 TV series called Return of Ultraman. Alien Nackle (ナックル星人 Nakkuru Seijin Nackle Star-people) is an alien race that came to Earth with the intentions of killing Ultraman Jack, but was thwarted by Jack's counterattack. Another one was dispatched by Yapool, and two more appeared in two different canons, in the Dark Spark War Timeline one, named Gray, worked for Dark Lugiel and recently in the Ultra Flare Timeline, two individuals went to Earth on their own accord.