set500 (mcdonald's)
A character introduced by McDonald's Japan to advertise it's medium-sized low cost combo meals for 500 yen.
It's design consists of a robot girl with white hair, black eyes and mechanical arms and legs with no joints, wearing a red hairband with fake antennae, a white skirt set composed of a shirt with a screen and a skirt, red gloves, shoes and a pair of sphere earrings.
Is often accompanied by a smaller robot with a single antenna and a wheel.