Touch him to bind him to you, and he will follow you around, acting as a light.
Light and face are easily customizable via applicator.
He will follow at whatever speed you go at.
Whatever. Speed.
(has a max acceleration though)
(ok given air resistance he theoretically has a top speed)
reset his binding via a button in his microchip's microchip
also he doesn't know what a wall is he's kinda dumb
feel free to use all or any part of him, his "owner" and "set linear velocity with max force" gates are probably useful