A marksman who was sent to kill Natasha Romanoff and recruited her instead, and who spent the rest of his career trying to get home to a family nobody was supposed to know about.
Clint Barton has no powers, no armour and no serum, and the films are largely uninterested in pretending that is remarkable. What they are interested in is that he keeps going home. The Avengers find out about the farm in the middle of the worst crisis they have had, and the film stops for twenty minutes so everyone can sit in his kitchen, which is the most unusual thing Avengers: Age of Ultron does.
His introduction is the best joke in his character. He is on a crane in New Mexico with a bow, watching a man in a crater, asking his handler for permission to shoot, and he does not appear again for a year.
What the story eventually does to him is take the farm away. Everything that follows, including a costume and a name he never explains, is a man behaving exactly as badly as somebody with nothing left would.
Show detailsHe was almost in the next one
Jeremy Renner shot material for Captain America: The Winter Soldier that was cut, so the character skips that entry entirely. He also makes an uncredited voice-only appearance in Black Widow, which the article records even though the same article’s summary counts five films rather than six.
This catalogue lists six, because the appearance is documented in the article’s own text. If you count five somewhere else, that is the reason.