10 Video Game Mysteries Answered In CUT CONTENT
6. Was Caroline Forced To Become GLaDOS? - Portal 2
Portal 2 reveals that AI GLaDOS was given life by the consciousness of a woman named Caroline, who was an assistant to Aperture CEO Cave Johnson.
A terminally ill Johnson's last request was that Caroline's mind be transferred to GLaDOS, with an audio recording confirming his desire to do it by force if she refused.
The game stops short of confirming that Caroline's consciousness was indeed placed into GLaDOS and made to run Aperture against her will, even if the implication seems pretty convincing in of itself.
But dataminers eventually discovered absolute confirmation of Caroline's grim fate via unused voice recordings from the game intended to be used in Act 3.
In one of these clips, Caroline can be heard telling Johnson repeatedly that she "doesn't want this," seeming to confirm beyond any doubt that she was indeed made to become GLaDOS entirely against her will.