|Faction||United Federation of Planets|
Mark Carter was a Human male who was the son of Major General Jacob Carter and Debra Carter and the younger brother of Colonel Samantha Carter. Mark has two children named David and Lisa. Mark is the former brother-in-law of Typhuss James Halliwell.
Carter's relationship with his father and, by extension, his sister was a difficult one. Jacob Carter's life was consumed by his work in Starfleet and it eventually brought tragedy on the entire family when Mark's mother was forced to take a transport when Jacob did not pick her up when he was supposed to. This resulted in her being involved in the accident that killed her.
Mark blamed Jacob for his mother's death, which led to their years-long estrangement. When his sister followed him into Starfleet, their relationship became slightly strained as well.
After Jacob and Sam participated in a mission that brought an end to Setesh's cult, they both traveled to Mark's home in San Diego in an attempt to clear the air with him. This attempt was successful, and Jacob was able to have a relationship with both his son and his grandchildren.
Years later, he set Samantha up on a blind date with his friend Pete Shanahan. The two started a relationship and ended up getting engaged but Samantha called off the wedding. At the same time, Mark learned his sister broke off her engagement to Pete Shanahan.
In an alternate timeline accidentally created by SG-1, Mark was never born as his father was killed in a war in December 2332, two years before his birth in the original timeline.