The Joker is a character.
As a fictional character and the archenemy of Batman , the Joker has been represented in a variety of different stories that redefine elements of the characters appearance and personality . 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 Comics . Mark Hamill , Troy Baker , and others have provided the character 's voice .