This is Phantasm, my Zoophobia OC.
He is based off a Siamese cat, and is the result of a demon cat and a vampire cat. He has vampiric and demonic powers, his tail can elongate into a weapon/strangling device, and he's vulnerable to heat and holy items.
He's reserved and can be described as anti social, because he gets tense amidst crowds, and much prefers his own company, or the company of at least his few close friends. He can be judgemental, and creates a facade of aloofness though he actually suffers from low self confidence. Phantasm is highly intelligent, observant, and analytical, and he uses his wit before brawn. He can be highly sarcastic, and even has a little dark humour within him.