- Debut: Batman #1 (April 1940)
- Created By: Bob Kane, Bill Finger, Jerry Robinson
Joker has done some horrific things in his long history, but he has no true origin that helps us know why he is as he is. Yet often, he realized he could not really ever hurt Batman physically enough for it to matter. Thus, he went after others he loved. In the infamous “Death in the Family” storyline, Joker ends Jason Todd’s life. Of course, Todd was Batman’s newest Robin. This was a massive blow, but Joker didn’t care. During The Killing Joke storyline, The Joker finds out Barbara Gordon is Batgirl. This leads him to track her down and “sexually assault” her, while also beating her to an inch of her life.
She was also paralyzed in the incident, and DC Comics kept this canon for the mainline universe. It does not stop there, as Joker has also done things like blow up a school and hospital. Perhaps his most recent horrifying action was making Superman think Lois Lane was Doomsday, thus resulting in the Man of Steel flying into space with her. Lane was pregnant and contained a timer connected to her heart. If her heart stopped, the timer would too. Which had been connected to several bombs all over Metropolis. Which meant he lost his wife, unborn child, and Metropolis in minutes all due to a joke by The Joker. He is the greatest villain, so how could he not be the best of the Batman Rogues Gallery villains?
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