Essential Avengers, Volume 3 »

The Avengers have always represented strength through diversity. Among the ranks of Earth's Mightiest Heroes are Captain America, a hero out of time, t hawed from an icy sleep since the end of World War II; Tony Stark, aka Iron Man, wealthy and privileged industrialist; the mighty Thor, Norse God of Thunder; and the Black Panther, warrior-born king of the African kingdom of Wakanda. But now, they have a new member of the team, unlike any that has come before... His name is the Vision and he represents the greatest diversity of all... for you see, he's an android!

Collecting:

Avengers #47-68, Avengers Annual #2