Batman

In honor of Batman Day I'll be talking about my absolute favorite hero of all time, as basic as he may seem.
Created by artist Bob Kane and writer Bill Finger, Batman first appeared in Detective Comics #27 (1939) and is the secret identity of Bruce Wayne, who, after witnessing the murder of his parents as a child, trains himself to physical and intellectual perfection and dons a bat-themed costume in order to fight crime.

Joker

And now for a little bit about Batman's main villain, The Clown Prince of Crime
The Joker is a supervillain who appears in American comic books published by DC Comics. The Joker was created by Bill Finger, Bob Kane, and Jerry Robinson and first appeared in the debut issue of the comic book Batman on April 25, 1940. 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.