The Cullens: a family of vampires.
Vampires (also known as The Cold Ones in Quileute legends) are the primary supernatural creatures of the Twilight universe. They are immortal beings who feed and survive on the blood of humans or animals.
Vampires are one of the four known supernatural species in the Twilight series, with the others being vampire-human hybrids, true werewolves (also called Children of the Moon), and shapeshifters. Though generally not thought as supernatural, humans might also be classified as such; vampires and Children of the Moon are transformed humans (by venom and infection, respectively); shapeshifters are a human population with gifts of their own; and, occasionally, humans show gifts of their own.