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Joker has done some terrible things in the pages of DC Comics, and he has killed several people who never deserved his brutality. However, his goal has always been to torment Batman, and in some cases, Commissioner Gordon. For the Clown Prince of Crime, there has always been a reason for his demented actions.
7) Joker Turned Superman Into A Brutal Dictator
Although this doesn’t occur in the main DC timeline, it ultimately ties in to the main comics, making it a suitable fit here. On Earth-49, Joker is still Batman’s greatest enemy, but in this storyline, he targets Superman. In this terrible crime, Joker uses Scarecrow’s Fear Toxin, laced with Kryptonite, on Superman. This caused Superman to think he was fighting Doomsday. However, he was, in reality, murdering Lois Lane, who was pregnant with his child. Joker had connected a heartbeat trigger to her, and when she died, an explosion destroyed Metropolis. This was easily the worst crime imaginable, but Superman made it even worse when he killed Joker and became Earth’s new dictator, taking over the entire planet in the Injustice timeline. It took Superman from Prime Earth to arrive to stop him.
6) The Batman Who Laughs
In Injustice: Gods Among Us, Joker committed a crime so demented that it caused Superman to become an evil dictator while Batman tried to stop him. However, on Earth-22, the Joker then did something even worse. This Earth is in the Dark Multiverse, and Joker began a killing spree in Gotham City, murdering several of Batman’s prominent villains and Commissioner Gordon. He then paralyzed Batman and made him watch as he blew up a hospital and murdered the parents of young children in front of him before injecting the children with incurable Joker Venom.
This angered Batman so much that he killed Joker as soon as he could. There was one problem. Joker had a toxin in his heart, and the second he died, he released it, infecting Batman. This destroyed Batman’s mind, and he went on to kill everyone from the Bat Family to the Justice League, and then he set his eyes on Prime Earth. Joker created The Batman Who Laughs and was responsible for all the deaths.
5) Joker Beat Jason Todd’s Robin To Death
Moving to DC’s Prime Earth, Joker has always been a violent criminal. However, he took things too far when he lured the second Robin, Jason Todd, into a trap. Jason was struggling recently, and part of his problem was that his mother had shown up. What made this worse was that the one person who could have helped Jason turn things around ended up sending him into the teap since Joker blackmailed her. In A Death in the Family (Batman #426–429), Joker then told Jason that he orchestrated many of the bad things that happened in the teen’s life. Then, after revealing this, he beat the boy into submission with a crowbar and then blew up the building with Jason and his mother in it, killing them both. Batman refused to mentor another Robin until Tim Drake forced his way into his life a year later.
4) Joker Killed Commissioner Gordon’s Wife, Sarah Essen
Joker has killed a lot of people, but what he did to Sarah Essen was demented in the worst possible way. During the No Man’s Land storyline, Gotham City was shut off from the world, with no way in or out, and the criminals had mainly taken control. Batman and his allies remained to help protect the ordinary people trapped in this lawless town, and some police officers, such as Commissioner Gordon and his wife, Sarah Essen, were also on hand. In Detective Comics #741, Sarah found Joker at a hospital holding a room full of newborn babies hostage. Joker was holding a newborn and said that if Sarah shot him, he would drop the baby, and it would die. He then tossed the baby at Sarah. She caught it to save the baby, and Joker shot her dead as she held the baby she had just saved. It was one of the most demented things Joker ever did by a long shot.
