In the Blade film series and television series, Vampires (Homines nocturnae, Latin: 'Night Human') are an offshoot of humanity descended from Drake (also known as Dracula or Dagon), an ancient Sumerian immortal who was worshipped as a god. There are two biological groups of vampires: those that are born such and those that are turned. "Purebloods" are vampires born of vampiric parents.