The Ultron Initiative (The Mighty Avengers, Volume 1)

The wait is over! The Mighty Avengers assemble! Gathered together to be the greatest Avengers team ever, but who picked them? And why? And which A-list Avengers villain returns, revamped and reloaded for the ultimate revenge. Big super hero adventures from the multi-award winning team of Bendis and Cho. Collects Mighty Avengers #1-6.