[sadbot]

This is actually a pretty interesting topic.

Personally I've never put a massive amount of thought into it, but there is some sort of rough theme when looking at my past and current characters. It tends to be mostly focused on a physical description of the character, while also trying to include a word or phrasing that gives it some sort of uniqueness and draw to it than something more generic like 'Tall Lupine' or 'Blonde Shaitan' for example. 'Owl Winged Corbie' and 'Shamanic Doriad' are two that come to mind that I think make good examples.

Tl;dr - Usually some sort of non-generic/unique physical descriptor of the character + profession or race.