Crowley (An Angel who did not so much Fall as Saunter
As The Book says:
Crowley had dark hair and good cheekbones and he was wearing snakeskin shoes, or at least presumably he was wearing shoes, and he could do really weird things with his tongue. And, whenever he forgot himself, he had a tendency to hiss.
He also didn't blink much.
The car he was driving was a 1926 black Bentley, one owner from new, and that owner had been Crowley. He'd looked after it.
"And he wears sunglasses," sneered Hastur, "even when
he dunt need to."