Wonder Man is a character appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artists Don Heck and Jack Kirby, he first appeared in The Avengers #9. The character, who was initially introduced as a supervillain imbued with "ionic" energy, fought the Avengers, and, after a series of events, was reborn as a superhero, joining the team against which he originally fought.

Donald L. Heck was an American comics artist best known for co-creating the Marvel Comics characters Iron Man, the Wasp, Black Widow, Hawkeye and Wonder Man and for his long run penciling the Marvel superhero-team series The Avengers during the 1960s Silver Age of comic books.