10 Things Everyone Gets Wrong About The Joker

3. Thinking Harley Quinn Is His Only Sidekick

Most people assume that Harley Quinn has always been the Joker's main sidekick. The adoring, petite Harley - real name Harleen Frances Quinzel - stands almost unconditionally by the villain's side and is almost as crazy as he is and you can be forgiven for assuming that's always been the case.

The fact is, Harley Quinn didn't actually appear in any media until 1992 and her first appearance was in Batman: The Animated Series. Such was her popularity on the show, she was drafted into the comic books, where she has remained a staple character ever since.

Prior to Harley's introduction, however, the Joker had another sidekick called Gaggy Gagsworthy - real name Gagsworth A. Gagsworthy - and he first appeared way back in 1966 in Batman #186. Gaggy was a dwarf who appeared in a circus show and he caught the attention of Joker when he violently lashed out at a fellow clown. He joined up with the villain as his answer to Batman's sidekick Robin and the two would commit crimes using gags and props. He has recently returned following a spell in jail and, having learned that Harley Quinn was the Joker's new sidekick and assumed she was responsible for turning him from a fun loving clown into a murderous psychopath, he tried unsuccessfully to kill her.