|Out of universe information|
- "Let's put it this way; the kid's never played a game of chess that lasted for more than five turns."
- —Samantha Carter
Jason Carter is a human adolescent from Earth, the son of Mark and Donna Carter. A certified genius, he has an excellent grasp of theoretical mathematics and astrophysics, inviting clear parallels to his aunt, the brilliant Samantha Carter. After being kidnapped by the Trust, and later rescued by SG-1, he joined the Stargate Program to put his talents to good use. Following the Fall of Earth, Jason accompanied the Ancient scientist Janus for a year, returning from the sojourn with incredibly post-human abilities. He would ultimately go on to give up his powers through a brief ascension to avoid a cult's attempts to use them for their own purposes.
Attempting to finally start a normal life, Jason now works for the International Stargate Command, furthering the "family business" of dealing with alien races and technologies.