That's true. They are often their own microbiomes, and I'm sure that appeals to your biologist nature.

[He's a necromancer of course, but that's the flip side of studying life science isn't it? Alucard knows that, and perhaps in another time and place, Hector's kinder nature could win out and let him live a more peaceful life.]

A mistake I've been accused of making more than once. My apologies.