When Ultron killed most of the Avengers, Iron Man took their kids and escaped to an isolated location. He believed his teammate, Hawkeye to be dead as well. Unbeknownst to him, Hawkeye had survived along with his son, Francis. Knowing he would not always be there to look out for his son, Hawkeye trained his son in archery and raised him with a group of freedom fighters. After Hawkeye's death, Francis took over leadership of the rebels as well as the mantle of Hawkeye.
During one of his raids on one of Ultron's compounds, he found the Asgardian Torunn fighting against Ultron's forces. He rescued her along with her teammates, the Kid Avengers, who he later joined. Although he did not get along well with his male teammates at first, they later put their differences aside and became friends.
He is cocky and a little hesitant to make friends, but he is a team player and a great archer, much like his father. He butts head with James because they are both leader figures, making his relationship with James similar to that of his father and Captain America while they were Avengers.