Big Bad — Lily Anderson

Buffy the Vampire Slayer meets Suicide Squad in this adult dark, rompy novel in which the most beloved villains from Buffy must team up to stop the Slayer from ending their evil universe!
Demondale, Callifornia, 1999...Like Sunnydale, but whole lot more evil.
Step into this alternate reality, where chaos reigns supreme. The Mayor's sun-shade has created permanent darkness over Sunnydale, fully opening the Hellmouth once and for all. Now the newly christened Demondale has become a safe haven for vampires, beasts, and all types of ruffians. It's never been better to be bad.

Aspiring supervillains (and super nerds) Jonathan and Andrew attempt to hold their own in a town full of monsters, while eleven-hundred-year-old vengeance demon Anya is just looking for something to give her life purpose again, spending her days working at an evil juice bar. But soon word gets out that there's a new Big Bad on the scene, one more powerful and more destructive than anyone who has come before. She, of course, is Buffy the Vampire Slayer. And she's hell-bent on rooting out all of this reality's evil by any means necessary.

Now Jonathan, Andrew, and Anya must recruit a team of Demondale's most notorious villains -- including Angelus, Spike, Drusilla, and even Ripper the malevolent magic shop owner -- in order to save their world. But it'll be no easy feat to put their pride and differences aside and stop the worst thing that has ever come to town: good.

Written by acclaimed author and Buffy super fan Lily Anderson, this novel brings together Buffy's most devious and beloved villains from the Trio to the Whirlwind to Anya, Glory, and Vampire Willow. This is one apocalypse Buffy fans are not going to want to miss!