Then, who played the mother in Joker?
Frances Conroy
Secondly, is Penny Fleck Joker's mother? Penny Fleck is the hidden main antagonist of the 2019 psychological thriller film Joker, the first installment of the DC Black film series. Penny Fleck is the adoptive mother of Arthur Fleck, a mentally unstable failed comedian whose lack of success and respect triggers his transformation into the Joker.
Hereof, did the Joker really kill his mom?
When he stole the file, he found out not only was Thomas Wayne not his father, not only was his “loving” mother neglectfully abusive to him, but she wasn't even his biological mother. Angry at this, he killed his mother and refused to be called Arthur anymore. Hence why he called himself Joker.
Is Thomas Wayne Joker's father?
You have been warned! In Joker, Thomas Wayne (Batman's father) and Penny Fleck (Joker's mother) are key characters. Penny claims that Thomas is actually Arthur's father. The movie wants you to guess for yourself who's telling the truth.