I thought Caleb Vatore was suppose to be a good vampire....(photos)

He isn't supposed to bite anyone by sneaking in. If he comes into the house he used to just hang out. This must be a bug, but he could also be a clone. I remember playing my Doctor Who and seeing him in the street, about the time they said they patched vampires (to tone down the break ins) then said they didn't, I developed clones in the game. Just a thought, but before they ever said they patched vampires then took it back and said they didn't Caleb never did do anything other than hang out.