Nightmare Fuel / American Vampire

• Skinner Sweet, the progenitor of the American vampire bloodline, was a violent and psychotic outlaw that has been rampaging across the West until he messed with the wrong kind of people (namely, European vampires masquerading as bankers that he robbed from). During a scuffle, he gets himself unwittingly infected by the banker when he is bitten and has vampire's blood splashing into his eye. He emerges as the first American vampire, powered by sunlight and even stronger than his progenitors. After being seemingly brought down by his arch-enemy Jim Book, he is buried alive for 20 years and remains awake the entire time...
• The Japanese vampires in the "Ghost War" story arc. If you thought the Euro-Vamps were bad, then this bloodline somehow manages to be even worse. For starters, they resemble Xenomorphs with their lizard-like body and eyeless faces. Their strain is far more infectious than any other - just one scratch, a bite or contact with their blood will transform you into one in matter of seconds. They are completely mindless and being transformed into one of them is A Fate Worse Than Death, at least other vampires keep their sentience when turned. Not even other vampires are safe from them. Skinner was heavily injured while fighting with a couple of these monsters and his wounds couldn't heal. Not even one of the strongest vampires out there was safe from them.