sentences:  In order to combat Red Onslaught, the heroes are forced to enlist the aid of supervillains through the Thunderbolts program, including Magneto and Green Goblin.The heroes and super-villains are able to defeat Red Onslaught and save Genosha, after which the Red Skull is imprisoned and Onslaught is destroyed.Sometime later, after defeating Ultron's invasion of Manhattan, the heroes are confronted by Doctor Doom.