Mighty Avengers, Vol. 1 #5 (2007)

The Initiative - The Mighty Avengers
Ultron has battled the Avengers to a standstill. Using not only her own technology but every trick that Tony Stark had up his sleeve, she has kept them rocking perpetually back on their heels. She has murdered Lindy Reynolds, the Sentry's wife and now all the rage of a thousand exploding suns rains down upon her.But Ares, the God of War, suspects that this is just part of a deeper strategy on Ultron's part. Working with Hank Pym aboard the S.H.I.E.L.D. helicarrier, he decides it's time to craft a strategy of his own.
Release Date: 2007