GLaDOS

GLaDOS is an artificially superintelligent computer system responsible for testing & maintenance in the Aperture Science Computer-Aided Enrichment Center. She's incredibly intelligent, has an infinite capacity for knowledge, & is the most massive collection of wisdom that's ever existed. She's known for her polite attitude, though it's usually a facade followed by thinly veiled insults. She can be very passive aggressive or mean, but also has a softer side. She's devoted to science & loves to test. She also loves cake, & promises it to test subjects as a reward for completing the tests, but rarely keeps that promise. She was based off the intelligence & personality of a woman named Caroline who was forced to run the facility after the previous CEO, Cave Johnson, died. GLaDOS developed into her own person, with Caroline as the metaphorical framework for her being. In android form she has pale skin, yellow eyes, white hair in a bob cut with black highlights & blunt bangs, & is tall. Her default form is a large mainframe chassis—slightly resembling a bound, upside down woman—attached to the ceiling, with a single yellow optic in the center of her faceplate, which is attached to the front of her head. Her color palette is white, black, & gray, with bits of yellow & red.