Buffy’s season 5 Big Bad promised hell on Earth
Big Bad: Glorificus
Aliases: The Beast, The Abomination, That Which Cannot Be Named, Ben, and Glory
History: Glorificus, a.k.a That Which Cannot Be Named, went by a couple of names in her time on Earth. There was Ben, a hospital worker and a real bore; and there was Glory, a gorgeous woman with killer everything. Although neither of those earthly identities was really adequate for this goddess, she managed to have some fun as the latter. The whole setup was a desperate attempt by the Order Of The Dragon to keep Glorificus from finding the Key (a.k.a Dawn), which would have let her break down barriers between dimensions, resulting in hell on Earth.