The Joker is a fictional supervillain created by Bill Finger, Bob Kane, and Jerry Robinson who first appeared in the debut issue of the comic book Batman (April 25, 1940) published by DC comic. Credit for the Joker's creation is disputed; Kane and Robinson claimed responsibility for the Joker's design, while acknowledging Finger's writing contribution. Although the Joker was planned to be killed off during his initial appearance, he was spared by editorial intervention, allowing the character to endure as the archenemy of the superhero Batman.

Captain Marvel, also known as Shazam, is a fictional superhero appearing in American comic books published by DC comics. He is the alter ego of Billy Batson, a boy who, by speaking the magic word "Shazam", can transform himself into a costumed adult with the powers of superhuman strength, speed, flight, and other abilities.

Wonder Woman is a fictional superhero appearing in American comic books published by DC comics. In her homeland, she is Princess Diana of Themyscira, and outside of her homeland, she is known.

Batman is a fictional superhero appearing in American comic books published by DC comics. Originally named the "Bat-Man", the character is also referred to by such epithets as the Caped Crusader, the Dark Knight, and the World's Greatest Detective.

The Flash is the name of several fictional character appearing in comic books published by DC comics. Nicknamed the "Scarlet Speedster", all incarnations of the Flash possess "super speed", which includes the ability to run and move extremely fast, use superhuman reflexes, and seemingly violate certain laws physical.