Terry's (played by Aimee Mullins) first appearance was in
season two. She is the mother of Eleven
and a test subject of Brenner's.
In season two, Terry was punished by Dr. Brenner for
breaking in Hawkins Lab to get her daughter back, and shooting the security gaurd
that was at the front door. After getting tortured, she can't say anything else other
than the things she saw and heard that day.