The Walpurgis Night was known among humans as a festival of witches, but it actually was a festival of the succubus race. The festival was lead by the Erzebet clan, the pureblood succubi who headed the succubus race.Even after the creation of Crepuscule, the Erzebet clan continued the festival as a way to unify the succubus race. But, during the last Walpurgis Night about 200 years ago, Crawford Erzebet went into a rampage and killed off all the pureblooded succubi. Immediately after, he dissipated. The only survivor, Angela Erzebet, slept for nearly 200 years in order to recover from her injuries.