Zero wouldn't allow anyone biting him/would be able to fight off an attack, but otherwise, I'm a-okay with the subject in general!

Question, though. Zero is a vampire hunter/vampire, and can pretty easily pick up on individuals who aren't exactly human. This can extend to humans w any peculiar ability or so. Is there anything that Tony's presence would give off that Zero might notice? It's fine, if not! Just thought I'd ask.