The team is led by billionaire Brazilian mutant Roberto Da Costa, who went out and purchased the villainous super-science organization A.I.M. (Advanced Idea Mechanics) and transformed it into Avengers Idea Mechanics.
The first villainous threat the U.S.Avengers will face will be a villain from the future named the Golden Skull. That's how the Captain America of the future comes into play, to help out in the first story arc of the series. Ewing explains that the Golden Skull will attempt a “global kleptocracy” in his past to secure evil doings in the future.