Source: cbr.com

8. Ant-Man

Scott Lang has fought alongside Captain America, but he isn't an official Avenger yet. It would be a smart idea to change that.

Scott was one of my favorite parts of Captain America: Civil War, even though he didn't spend that much time in it. Paul Rudd is a phenomenal actor, and his instant chemistry with everyone else is palpable. He's a wonderful addition to any team, both from a character standpoint and a super-power standpoint.

A character who provides pure comic relief is necessary to make a super team work, and again, when you have Paul Rudd, you use him. In addition, having a size-changer on the team allows for a whole heap of innovative fighting concepts. From shrinking and riding on an arrow to growing big and stomping on fools, Scott Lang would be a fun-as-hell addition to any Avengers line-up.

Welcome to the big leagues, Scotty.