Siri's appearance is short in stature with short messy blonde hair and black glasses. She prefers to dress in a way that is utilitarian, so military fatigues are a perfect match for her personality.
She hails from Earth where she was a bit of a prodigy growing up. She started out in a small country town, but didn't stay there for very long. She graduated college at the age of 16 and was recruited by the USAF to be a part of the Stargate program. Due to some of her behavioral challenges, she was not a good fit for the regular military but is fine as a contractor for the Phoenix Base.
Siri has had a hard time making friends due to the fact that she was always the youngest person in her classes in high-school and college. She did not have many normal coming of age experiences, like prom or parties. However, Siri did make friends in a robotics club where she built fighting robots and frequently won. This is also where she was recruited by the air force.
Siri enjoys anything technological and frequently likes to take things apart to see how they work. She is particularly fascinated (and at times frustrated) with dissecting alien tech.