Karuyuko Haiko

Karuyuko Haiko, comes out of a full-blood vampire family but is a 'failure vampire'. This means he can't drink blood and isn't affected by garlic(Holy water -does- harm him though.) Instead Haiko has to consume a mix of all the body juices combined from victims. It's technically purely the life force of someone, so while Haiko can't drink pure blood he drinks a mix of all kind of body juices together. ( I guess the closest I could explain it as it being a form of direct 'life force', if you know Dragonball Z I guess you could compare it a bit to Cell sucking the life out of humans until nothing is left. Though I admit the idea is odd, I created Haiko around 10 years ago when I was 14 so some parts of him are most definitely flawed and strange.)

The Vampire race rejected him and wanted him killed, in the end the vampire race killed Haiko's parents because they wouldn't kill their 'failure' son. This caused Haiko to despise vampires and to actually side with Werewolves and fight Vampires as if they were his natural enemy.