Uriel

Uriel gives off big serious vibes, very proper, very calm, very unflappable and all of that, but in secret is a fan of music that is generally considered to be bad, like really, really bad. When they're flying and no one else is around and they're sure that no one will be able to hear them they belt out the lyrics of their favorite songs, sometimes trying to sing all the parts if there are multiple singers in the piece, or at the very least making Loud Coatl Noises to mimic the instruments during parts where there are no lyrics. They get so into the singing, really rocking out, that they'll miss a beat with their wings and tumble in the air.

Once this even caused a particularly rough landing in an open field, which they claimed was actually due to wake turbulence from a Ridgeback who'd landed shortly before them rather than admit the real reason they dropped about a dozen meters all of a sudden and couldn't even out before reaching the ground.