I'm not sure it's a cockerel, personally, but it's no Orpington. How old is that chick? Legs look pinkish so could be a Cuckoo Marans or a cross of BR x Marans.
I once did get a rare weird throwback from my blue Orp x RIR/buff Orp hen who had barring, a hidden gene coming from when Sandhill Preservation used Plymouth Rocks to offset inbreeding in their blue/black/splash Orps, but his barring wasn't clear like that one. That isn't an Orpington.