Playing with my girl's inking pens. I likes them.

Pandora is a half-demon with three forms - human (always with tail, occasionally with wings and/or horns), demon, and feline.
This would technically be Pandora mid-transformation into a demon.... or fighting his transformation.... whatever. The spike row on his back (which is more like a seraded blade) is the first thing to show up before he transforms besides his horns...