Batman (1989 one)
The Theory: The Joker didn’t actually kill Batman’s parents, and Batman only sees the face of his parent’s killer in every criminal he sees.
Why It’s Possible: This is a common part of Batman’s psyche in the comic books and Burton did a pretty good job of it in the movie. Also, in the movie young Bruce doesn’t REALLY see the murder. Also, The Joker killing his parents isn’t really essential to the plot of the movie if you’re going by the fact that Batman is a hero and kills criminals. He’s not supposed to have vendettas.