Question of science

I never really liked science...
Reminds me of something, something that feels strange, as if it is me, but is not.
*Walks into the empty classroom*
Who am I?
I am not human, nor vampire, and there is no recordings of a cross *said peering into a book* because Vampires kill humans.
So, what am I?
Vamman? Okay, thats dumb.
*Bangs fist on a table*
Vampires aren't Christian, I am!
Who the hell am I?!
*Teleports, without any special removings or addings - not my teleport though.*