The Joker's Mother was, as the name suggests, the mother of the Joker.
Before the Joker killed Gambol, he stated that his father, who was according to him "a drinker and a fiend", had in the past attacked his wife, who attempted to defend herself with a kitchen knife, but he took it from her and sadistically attacked her with it before slicing his son's cheeks into a Glasgow smile, as the latter was allegedly terrified at what he was seeing his father do to his mom.
Behind the scenes
- The Joker's account of his father's attack on his mother can only be viewed as hearsay.
- In the movie screenplay, The Joker's original line when Sal Maroni asked him why he hadn't killed Batman yet, he answers "Like my mother used to tell me– if you're good at something, never do it for free". In them movie, The Joker's mother mention was cut and he simply says "If you're good at something, never do it for free".