While the entirety of Marvel Comics’ Civil Warevent contained a multitude of interwoven storylines of betrayal and deceit, one aspect of the event involving a forgotten Avengerstraitor is easily Civil War’s biggest missed opportunity. Nearly every character within the Marvel Universe found themselves fighting a superhero civil war after Iron Man backed a proposed law that would force superheroes to register themselves with the government, with dissenters locked away in an inescapable facility. Captain America strongly opposed Iron Man’s efforts and formed a team of heroes to stand up to Stark and his team, who were working to enforce the Superhuman Registration Act. During the conflict, one superhuman became a spy who was eventually found out by the enemy, but other than the immediate moment of that revelation, the subplot was never explored further.
In Civil War#6 by Mark Miller and Steve McNiven, Captain America and his team are coming up with a plan to free all of the incarcerated heroes and villains that were arrested under the Superhuman Registration Act. When Cap’s team arrives at the Prison 42 facility, they are met by Iron Man and his army, who are there to stop Captain America’s forces and throw them in prison alongside those they were trying to free.
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Iron Man knew Captain America’s team was coming to the prison because he had a mole on Cap’s side who was feeding Iron Man information. The Avengers traitor was Tony's former West Coast Avengers teammate Tigra, and while she was responsible for Iron Man intercepting Captain America’s army at the prison, it was all a part of Cap’s larger plan. Captain America reveals in this issue that he knew
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