Wilson is stationary robot turret without guns. He cant move. His pupil is dilated and moves when unlocking a door. Wilson accompanies Bad Cop in the "Chamber Catacomb" chapter. You don't have to carry him with you after leaving the Arbeit secret labs, but bringing him along allows you to unlock extra supply caches, and if you bring him to the AI upload station in Arbeit 3 as he asks. He is stationary turret without moving limbs, so you suppose to carry him. He is like little minion for boss.