The Sarah Connor Chronicles introduced many new aspects of Terminator lore, including the arrival of the series’ most advanced model yet seen. The show was the Terminator franchise’s only attempt at a television series, centering around Sarah Connor as portrayed by Lena Headey in the aftermath of Terminator 2. She was joined by Summer Glau’s Cameron, a terminator sent back to protect John Connor. It was the typical Terminator setup, with the twist that Cameron blended in far better than any Terminator audiences had seen before or since.

https://screenrant.com/terminator-model-sarah-connor-chronicles-cameron-advanced/