The Illuminati, a secret organization, was formed to save the world, but its members have done some terrible things on their own.
Initially, the group consisted of Iron Man, Namor, Reed Richards, Doctor Strange, Charles Xavier, and Black Bolt, with Black Panther refusing to join due to the egos of the members.
The Illuminati's actions led to the Secret Invasion and World War Hulk, and they almost destroyed Earth-1610, causing more harm than good.
Here are the worst things each member of the Illuminati has ever done, from manipulating allies to almost destroying the world.
The group's formation and actions were first revealed in New Avengers #7 in 2005.
Author's summary: Illuminati members' worst actions revealed.