First of all, let me express my complete and utter shame for avoiding everyone for the past... however long I was gone. I tend to get really antisocial on the internet when I'm working on gargantuan projects like this one.
Second: Let's actually talk about what you're looking at here.
You might want to go full view/ download on this one, since most of the details are above the waist.
When you think about it, GLaDOS like a doll in a music box, in that she is rooted in one place but is able to spin.
I wanted to design something that allows GLaDOS to maintain the drama in her movements, while maintaining the uniqueness lent by restriction. In this design, she can bob, weave, dance (when no one is watching) or do any sort of movement that does not require her to leave the "stage". The stage itself is actually made up of the rings that hung above her in the game (notice the upside down name c: ).
Since I'm still an ignorant ass who loves object heads just because they look so silly, that's what I used here. a Portal 1 GLaDOS object head in a Portal 2 GLaDOS robot suit. It was frustrating but fun figuring out how to place the one head inside the other. The cloths she's wearing inside the robo-suit are based on a priest's garments, since I'm still going with my western theme.
She is able to leave the stage for a limited amount of time, however, before she has to recharge the suit again (her "dress" here is made of wires). When she leaves the "dress" and the "stage" the lower "torso" of game GLaDOS becomes this GLaDOS' legs.
You may notice a hint of Ripley's power loader (from "Aliens") in the design. c: Watching the trailer to "A Monster in Paris" was an inspiration, as well.
Since college started up again for me and I have a maddening amount of work to do, consider this a sort of "farewell gift" from my gallery until I have time away from homework, etc. This could be a very long time.
Also: bladibladibla Portal and GLaDOS are not mine, but the design for this GLaDOS is mine.
I used a heck of a lot of quotation marks just now.