took me 3 days to make
Chell is the silent protagonist of Portal and in the single-player campaign of Portal 2, and was an Aperture Science Test Subject (Subject #1, Formerly Subject #1498).
Although Chell's origins are unknown, she was definitely among the people present during GLaDOS' activation in 200-, as GLaDOS locked down the facility immediately afterward; information revealed in Portal 2 implies that Chell was the child of an Aperture scientist and was touring the facility on Bring Your Daughter To Work Day when GLaDOS took over. According to the psychological profile in her personnel file, Chell is "abnormally stubborn" and refuses to ever give up, no matter how daunting the challenge. Originally, she was rejected as a test subject, but Doug Rattmann altered the testing order, having correctly guessed that Chell's extreme tenacity might allow her to defeat GLaDOS.
read more about her HERE