Prior to the conflict between the Basics and ISOs, Quorra was friends with Radia. She witnessed Clu's betrayal when he attempted to kill Tron and Flynn, and when Clu declared war, she - with the help of a prototype security program named System Monitor - attempted to warn Radia and the ISO's about him as well as combat the viral program Abraxas. After the purge, she attempted to kill Clu but was rescued by System Monitor and they escaped using a Recognizer. However, the Recognizer crashed and only Quorra survived, leaving her stranded in the Outlands. With her energy depleted, she collapsed as her systems began shutting down, only to be saved by Flynn at the last moment.

------------------------------------------------
I sure didnt know any of that. I bet some of you like Quorra better now hu?
Ive always been a loyal fan of hers, even before I knew some of this stuff