The two most iconic comic book heroes are SUPERMAN and BATMAN. SUPERMAN, also known as the Man of Steel, is a superhero from the planet Krypton who has superhuman strength, speed, and other abilities. He was created by Jerry Siegel and Joe Shuster in 1938 and first appeared in Action Comics #1. BATMAN, also known as the Dark Knight, is a billionaire vigilante who fights crime in Gotham City. He was created by Bob Kane and Bill Finger in 1939 and first appeared in Detective Comics #27. Both characters have become cultural icons and have been featured in numerous films, television shows, and video games.