- “”Superhero”” has been jointly trademarked by DC Comics and Marvel comics.
- The most valuable comic book in the world is Action Comics #1 which includes the origin and first appearance of Superman.
- Kryptonite made its first appearance on the Superman radio show, not in the comic book.
- Superman is 6 feet 2 inches tall.
- Wonder Woman’s bulletproof bracelets were made of a metal called feminum.
- Marvel comics put a hyphen in Spider-Man’s name so he would not be confused with Superman.
- Captain Marvel’s appearance was modeled after actor Fred MacMurray.