Phoenix was originally designed as a Gangrel replacement. Gangrel are more in touch with the "Beast" than any of the other clans. They are the vampire equivalent of a druid. Like druids, they are known for their ability to transform into various creatures (Though VTMB only allows one).
I felt that the Gangrel model’s that came with the game wore too many layers of clothes. My impression is that they would resist clothing, the same way dogs, cats and almost any animal other than humans resist wearing clothing. So my concept starts off with less clothes and generally sticks to thin, light clothing.
You can’t see it here, but the model has a large tattoo of a wolf on his back which can be seen when using the first outfit. Phoenix could also work as a Brujah, Toreador, Malkavian or even Tremere.