| ||||
 | ||||
| The Joker | ||||
| Real name | Jack Napier | |||
| Debut | Batman #1 (June 1940) | |||
| Created by | Jerry Robinson, Bill Finger, Bob Kane | |||
| Affiliations | Injustice League | |||
| Abilities | chemist, gadgets | |||
| Played by | Jack Nicholson, Mark Hamill, Heath Ledger, others | |||
The Joker is a supervillain widely considered to be Batman's archenemy. The Joker is a master criminal with a clown-like appearance,and a violent sociopath who murders people for his own amusement, a vicious, calculating and psychopathic killer. He was described as a homicidal maniac by Batman, and was admitted into Arkham Asylum many times. He was Batman's deadliest enemy and a constant and dangerous one of the Justice League, also being one of the founders of the Injustice League.