For the hat war going on, with Nathan being on the Black Buttons
Robin is his first victim- Nathan doesn't care much for the KO part of the Hat War, so instead he'd rather use Psychic to swipe it off her head and run away, facing whatever consequences it brings later. lD
He isn't all that confident on snatching hats from people he doesn't know, but he has no qualms with running away with friend's. It's all in good fun right? 'Sides, red witch hats are totes first on his list anyway.