When the Hulks thwart a villain from attacking a girl in the mall, they unintentionally start an alien invasion Deathlok was sent to stop.
When the Hulks thwart Deathlok from attacking a girl in the mall (who is actually a shape shifting Super-Skrull in disguise), they unintentionally start a Skrull invasion that Deathlok was planning to stop. They discover that the Skrull invasion is led by Super-Skrull.—Wikipedia