Oh nifty.
He's 5' 10", wiry not bulky muscular. Dark brown hair, grey eyes, clean shaven and fashionably longer hair. He dresses well. The only obvious 'ware is a datajack behind his left ear. He's young, early 20s, and carries a machine pistol for self defense and a submachine gun for work.
Also, if you feel like it, he has two drones: a Fly-Spy and a Microskimmer. He uses those to scout around and generally watch his back.
Oh and he's a thief. Datathief, sure. But he's not that picky.