So I had this idea of the two being opposites (good and evil, devils and angels, etc.)
This guy is a fallen angel, more in the sense of him being just absolutely horrible at his job, so off he went into the mortal realm. His wings can change sizes, which serves quite well with keeping on the low and not being so obvious in a crowd. He has a little moth companion that he stumbled upon a few years back, at first confusing it for a green bean (it was much smaller!) it speaks only in little chirps, but it's emotes are obvious when it gets angry from a lack of attention.
He got the scar on his face after being booted off and falling on Earth (literally), a very bad landing on his part. And the scar on his arm was from a previous interaction with a devil, which left him with a bad taste in his mouth for a while- but it wouldn't affect his first meeting with Lucyfer. In fact, he was quite excited to bother the waiter by ordering a large amount of intricate dishes (would he finish them? No.)
I think you can see why he wasn't really fit to be an angel.
He also has a soft spot for fuzzy animals like his companion, so Lucyfer's cats would definitely intrigue him and have him melt into a puddle- before getting embarrassed if Lucyfer sees him.
And if Lucyfer looks closely, he'll notice that his eyes are almost glittery in the sun, how weird...
I really hope you like my entry! <3
