- Anarky (a.k.a. Lonnie Machin), an ambiguous superhero/villain in publications of DC Comics.
- Beta Ray Bill, an alien superhero from Marvel Comics
- Booster Gold (a.k.a. Michael Jon Carter), a superhero in publications from DC Comics.
- Dr. Manhattan from the graphic novel and Watchmen
- Iron Man (a.k.a. Anthony Edward "Tony" Stark), a superhero in the Marvel Comics Universe.
- Johnny C. (a.k.a. "Nny"), the main character and serial killer in Johnny the Homicidal Maniac.
- Hank Pym (a.k.a. "Ant Man"), a Marvel Comics character who founded The Avengers
- Mister Terrific (a.k.a. Michael Holt), a superhero in the DC Comics Universe.
- Savage Dragon, superhero who stars in his eponymous series from Image Comics.
- Starman (Ted Knight), superhero from DC Comics and member of the JSA.
Read more about this topic: List Of Fictional Atheists And Agnostics