Issue: Avengers # 16
Writer: Stan Lee
Artist: Jack Kirby
Publication Date: May 1965
It's time to expand the roster. A number of characters we've already been introduced to are joining the Avengers. And these are some of the Avengers mainstays.
For those who think that the idea of shaking up a team's lineup every few issues is something more in touch with the modern era, keep in mind what Stan has done with the Avengers since we began. He replaced the Hulk with Captain America after only a few issues, and now, about a year later, he's changing the team dynamic again. And, in fact, the team is now devoid of any of its original members, as it's just Captain America, Quicksilver, Scarlet Witch, and Hawkeye.
All of the characters joining the team (Hawkeye, Quicksilver, and Scarlet Witch) started out their careers as evil doers, but now they've found a home with Marvel's mightiest super team.
Iron Man gets a little tearful as he leaves the team, but we all know he'll be back again someday, just like all the other Avengers who have left the team at this time.
Next issue: The search for the Hulk!
A hilarious and largely true caption.
Next: Fantastic Four # 38