Made some updates to the Dhampir:
A pregnant human who is bit and turned into a vampire will produce a dhampir. All the strengths of a half-blood none of the weaknesses. They still must consume blood, but animal blood will not sustain them at all. Consumption of animal blood results in a violent almost allergic reaction, such as diarrhea, vomiting, bloody tears, and even death. They protect their half-blooded masters while they sleep during the day. They always appear human looking. Two dhampirs can reproduce the resulting child is a dhampir.
Slaypire:
An ungodly abomination. A Sired Vampire that was once a Slayer. They have all the powers of a Slayer and a Vampire as well as the weaknesses of a Vampire. Dracula the most powerful Sired Vampire to ever exist is rumored to be a Slaypire.