The Joker is a supervillain and the archenemy of Batman. He was first The Joker. Batman Vol Cover-2 Teaser. General Information. Real name Real name : Unknown (former Joseph Kerr). In-story information. Team affiliations. Injustice Gang · Injustice League. Notable aliases, Red Hood. Abilities. Criminal mastermind; Expert chemist; Utilizes weaponized props and toxins. The Joker is a fictional supervillain created by Bill Finger, Bob Kane, and Jerry Robinson who First appearance : Batman #1 (April 25, ). Don't make us laugh. The green hair. The crazed smile. The maniacal cackle. You know exactly who he is and how far he'd go to put a smile on your face.