Plenty of people wind up on the wrong end of Barton’s arrows, especially based on the direct orders of S.H.I.E.L.D.
As he is part of the Avengers Initiative, his enemies are the ones that threaten this group and Earth. He faces the likes of the Chitauri, HYDRA, Ultron and his robotic sentries, Ulysses Klaue, in his bid to keep the world safe. Hawkeye even battles his fellow heroes when they stand in the way of Captain America and the Winter Soldier getting to Siberia, when the Avengers split over the Sokovia Accords.
His most notable enemy, however, is Loki. With his strong sense of morality, Clint suffers at the thought of having worked against S.H.I.E.L.D. and his fellow agents, mourning the losses at his hand. He blames Loki for this violation, and the Asgardian prince has earned Barton’s eternal enmity.
Friends in High Places
As an agent of S.H.I.E.L.D., Clint Barton is allied with many in this organization. He respects and takes orders from Nick Fury (unless they contradict his own sense of what is right) and supports colleagues like Maria Hill and Phil Coulson.
His closest friendship is with Natasha Romanoff, AKA Black Widow, who he recruits for S.H.I.E.L.D. They often work together on missions and have a strong rapport. Natasha has been known to wear an arrow necklace in honor of her friend, and even bargains for his release when he is under Loki’s control. He cannot bring himself to fight her properly when they are on opposing sides of the Sokovia Accord dispute. She is also the only agent apart from Nick Fury that he entrusts with knowledge of his family (until he brings the Avengers to his compound). When Director Fury put the Avengers initiative in place, Barton fights alongside the likes of Iron Man, Hulk, Captain America, Thor, and eventually, Ant-Man, Vision, Falcon, War Machine and other heroes. He forms a close bond with the Maximoff twins, acting as a mentor when they switch sides to face against Ultron. He mentors Scarlet Witch, encouraging her to face her fears and become and Avenger. Pietro Maximoff, AKA Quicksilver, even gives his life to save Hawkeye.
Most important to him, however, are his wife Laura and kids Cooper, Lila and Nathaniel (whose middle name “Pietro” reflects the hero’s sacrifice).