Yuri Batkovich (Юрий Батькович, if you want to get technical), is a young-looking Russian (illegal) immigrant to America. He is skinny and lean and grey, and is usually smoking.
He gives off a faint aura of menace, of promised violence. It's the kind of feeling that you expect from some Cold War Commie Secret Police, not some little watchful bird like Yuri (He doesn't mean to, honest).
He's also the former shadow of a beast poured back into a human shape who tends to wear a suit. That's what being a changeling gets you.