Chell [REDACTED]

1. She isn't actually mute, despite what GLaDOS thinks. She simply chooses not to talk to anything produced by Aperture as her own personal form of rebellion. This has carried over to pretty much any cybernetic lifeforms she may run across in the future.

2. When she does talk it's in short, clipped sentences.

3. She has serious trust issues. Blame Wheatley for that one.

4. She keeps the long fall boots and her faithful Companion Cube with her at all times. Mess with either of them and it will not end well.

5. The only things she knows about her life before being used as a test subject is that her name is Chell. Everything else is a blank.

6. Her only identifying marks are some scars from being shot at by sentry turrets and a pair of scars on the sides of each knee from when she had the advanced knee replacements attached.

(I'll probably add more to this later, but for the time being...)