... is the main protagonist of the Masters of the Universe franchise, which was introduced by Mattel as a reaction to the success of the action figures associated with the Star Wars franchise. (Mattel had declined a deal to produce the Star Wars figures in 1976.)
According to Wikipedia, He–Man first appeared in 1981, in a story entitled He–Man and the Power Sword. This is one of four "original minicomics" listed by Wikipedia on its Masters of the Universe page.
© Haydn Thompson 2023