all lowercase letters: when typing. I went with this to mimic Liana's Chell.
Anime Anatomy: GLaDOS didn't see a point in adding that.
Brain Uploading: How she became a robot.
Electronic Speech Impediment: When damaged, her voice becomes staticy and she develops a stutter. (The "stutter" in her text posts was just her having trouble typing.)
** ComputerVoice: She sounds much like, well, herself normally, but with a tendency towards monotone, and that synthesized quality GLaDOS has.
For Science: She doesn't care so much about getting out of here; she's interested in the teleporters because it's a puzzle to solve. Well, that and she's concerned that they might teleport her into the vacuum of space one of these days.
* No Social Skills: I feel like I'm not getting this across very well.
* Robo Speak stock phrases ("no data available...")
* Sanity Slippage: "i understand now. this is a test :)" I kind of want her to go a little nuts sometime even without the black rock damage. AI in the Portal universe isn't exactly reliable, after all.
* Stockholm Syndrome: let's just say her thoughts on GLaDOS are complicated.
* Terse Talker
* Why Did It Have To Be Space: She's fine with being inside a giant space station, though, as long as the airlocks stay closed. It's actually ending up out there that she's scared of.
Incidentally, she'd be really bothered by being on a shuttle to Asphodel. A lot less between you and the void than when you're on Sacrosanct. So obviously that needs to happen someday.