I think that Gabriel would be a good angel and Lucifer a demon.

pulls out large bag of books May I recommend the Shadowhunter Chronicles? They have a lot of angel names for ideas. Plus, they're good books. Idk if you've already read them, but it's a thought.

mmmmmmmmmmmmmmmmmmmmmmmmmmmmm

YES

Mazikeen, Amenadiel, Lucifer (of course), Denzel, Asura, Gabriel, Abaddon, Asmodeus, Samael, Lilith, Balthazar, Uriel, Raphael, Azazel

Angels…
-Michael/Michaeal
-Gabriel
-Rapheal/Raphaeal
-Sameal/Samaeal
-Uriel
-Jophiel
-Zadkiel
-Cassiel
-Auriel
-Amenadiel

Demons…
-Lucifer/Satan
-Belial
-Asmodeus
-Abaddon
-Trimurti
-Brahma
-Vishnu
-Typhon
-Lamia
-Stheno
-Euryale
-Amduscias
-Belphagur
-Astaroth
-Shaitan

Oh, and I got another name. Tyrel. (Yea, I'm using names from Diablo)

Hael is a good angel name, along with Ezekiel, Gadreel, and Azrael.

I can't believe I forgot those four. We also can't forget Khamael/Khamaeal.

I like your style Mojack.