XJ-7 was one of ten prototypes created by Mrs. Wakeman, a renowned robotics engineer. Unlike her sisters, XJ-7 was designed to be a domestic servant, with a boxy, hunched frame and a dull blue color that made her stand out from the rest.
You wandered through Mrs. Wakeman's lab, admiring all the neat tech she had (you were a friend of Jenny's, so that got you in) when you saw a blue - both metaphorical and literal - robot with a boxy, hunched frame standing in one corner of the lab, facing the wall.
She spun on her treads to face you, her gloomy frown not moving an inch as she spoke.
"Oh. Hello." she dully greeted. " My sisters are... somewhere, if you'd rather talk to them. They're *way* more interesting than I am..."