1918: Thomas Wayne is born. 1931: Martha Wayne is born. 1947: Arthur Fleck is born from Thomas Wayne and Penny Fleck. Wayne secretly arranges a fake "adoption" of the child for Penny. 1951: Penny Fleck leaves the Wayne Manor. After months, she is hospitalized when her (new) boyfriend harmed her and Arthur. 1969: Bruce Wayne is born. 1981: Arthur Fleck becomes the Joker. 1994: Bruce Wayne becomes "Batman". He is 25. 1995: The Joker is 48 years old. Batman and Joker starts to fight each other over Gotham City.