5/10
I think the general concept of a serpentine cat is very fun (I am assuming that is what you're going for with the serpent tag, tongue, teeth, and tail scales(?)) but I do wish he gave off Even More snake vibes. Maybe taking after some snake morphs for his fur design, maybe just an actual snake tail!
I don't like the contrast of the tail compared to everything else, unless they're just stripes and not scales, which in that case, it would be fun to have more stipes on him too, maybe like an axanthic ball python.
A pop of color with an accessory, like a red apple if you're into symbolism :P would be fun too I think. Maybe something that jingles. I feel like he'd be a dude that likes jingling around.
Hallowheat ... because I wanted my fursona to have a halloween version.

Marceline Adventure Time inspiriation because I really like the concept of a vampire just feeding on color and also Twilight because. Yeah. He can also just feed like a normal vampire too :3c
Everything by me