Cooper lives in a farmhouse in Missouri with his mother and siblings. Their entire existence is kept a secret due to his father's dangerous field work for S.H.I.E.L.D. and the Avengers. Natasha Romanoff was the only other person to be aware of Barton having a family and she become close with them and even developing an aunt like relationship with Barton's children.
When his father returned with the Avengers, Cooper greeted him by hugging him. When his father returned home from battling Ultron, retiring from the Avengers, Cooper and his sister were reading books. Shortly after, his mother gave birth to Nathaniel Barton.
When he was older, he, his sister, brother, and mother were killed in the Decimation. Five years later they were brought back by the Hulks snap. The Barton family attended Starks funeral.
- Grandfather †
- Edith Barton † - Grandmother
- Clint Barton/Hawkeye - Father
- Laura Barton - Mother
- Lila Barton - Sister
- Nathaniel Barton - Brother
- Thanos † - Killer
|Appearances for Cooper Barton|
|In chronological order:
- In the comics, Callum Barton is the son of Clint and Laura Barton. His mother, his siblings and himself got murdered by a black ops team that was led in Barton's home by a traitor within the Ultimates.