10 Superheroes Who Broke Bad
8. Maxwell Lord
When the Justice League of Detroit disbanded, businessman Maxwell Lord approached several lesser known heroes such as Blue Beetle and the Guy Gardner Green Lantern to form an all new Justice League. Max's motivations were initially selfish, wanting to use the team to further his own business interests, but as time went on he became more heroic and genuinely interested in saving the world.
That would be retconned though, during the lead-up to the event 'Infinite Crisis'. It was revealed that Maxwell Lord was actually an evil mastermind, using his time on the Justice League International to further his criminal interests and sabotaged the group to make them as ineffectual as possible. When Max's former teammate Blue Beetle uncovered the truth, Max shot him in the head.
In an earlier story, Max had also received mind control powers. Now he used those powers to take control of Superman and have him nearly beat Batman to death. With no other choice to save her friends, Wonder Woman broke the control on Superman by snapping Maxwell's neck.
Maxwell Lord would later be resurrected though and has been a major threat since. Most recently being the mastermind behind 'Justice League vs. Suicide Squad', pitting the two teams against each other.