The blood demon clan.
It was said they were beings blessed by the gods. With magical abilities, they were considered as Demigods. However, the proud members of the clan wanted more. They didn't want to worship gods, instead; they wanted to be gods themselves. To make their dreams come true, they started working together to take over the world.
The blood demons' first target was the beast clan… Similar to them, the beast clan was blessed by the gods with incredible physical strength and power just like a beast. The beast clan was also proud, but they were born loyal and had warrior traits. Unlike the blood demon clan who wanted to be the most powerful, the beast clan only wanted to serve the heavens who granted them life, winning every battle they faced to prove their loyalty.
The war between the two clans started hundreds of years ago. The true-blood vampires led the blood demon clan against the Alphas of the beast clan.