Scott Summers is the son of Christopher Summers, a pilot. He has two brothers, Alex and Gabriel. Scott did not know that he had a second brother for a long time. Scott has multiple children. They are all powerful mutants. His daughter's name is Rachel. She is from an alternate future and can move things with her mind. Scott has a son named Nathan Christopher, and there are multiple versions of him because of time travel. The most well-known version is Cable, a large man with a mechanical arm. The other well-known version is Nate Grey, who is from another alternate timeline.