Hey.
He acts so tough. He always has a smile, always blows off whatever insults he's dealt by the Slytherins, always has a fresh idea for an amusing prank.
But then you turn around and find him staring off into space, an uncharacteristic thoughtful look on his face or see him pale at the train station when his parents come to pick him up.
Is he fragile and child-like or a hardened prankster?
I will figure you out, Sirius Black.