10 Worst Things Batman Has Ever Done
9. Secretly Kept Files On How To Take Down His Friends
What makes Batman one of DC's best heroes is that he always has a plan. No matter what foe he may face, the Dark Knight is ready to take them down.
It's less cool that he did the same thing to his friends. Admittedly, it's probably a smart idea for Batman to know how to take down his Justice League teammates, given that they seem to get mind-controlled every other week. However, the fact that he kept even the fact that he had plans secret from them was just asking for trouble.
And of course, said trouble came calling. In the story Tower of Babel, Ra's al Ghul broke into the Batcave and stole the Justice League protocols. He then used them to incapacitate the League, to brutal effect. Superman's senses were overwhelmed by Red Kryptonite, Wonder Woman was trapped in a virtual reality, Green Lantern was blinded, Flash was given seizures, Aquaman was rendered hydrophobic by Scarecrow's fear gas, Plastic Man was frozen and shattered and Martian Manhunter was infected with nanites that burned on contact with air.
The League members were able to recover and defeat Ra's, but the sense of collective betrayal led to them kicking Batman off the team.