Marilyn Manson/WMG

Holy Wood, Mechanical Animals, and Antichrist Superstar are more related than they seem.

Manson confirmed that they tell a story in reverse order, but this has been taken with a grain of salt by most. There's evidence for it though:

Coma White is the mother of The Worm and the pregnant girl mentioned in "Valentine's Day"
Adam is the father, but he commits suicide at the end of Holy Wood after the failure of his revolution ("Count to Six and Die")
Omega comes to Earth and falls in love with Coma White, but she becomes addicted to drugs and dies of an overdose ("Coma White")
The Worm idolizes Omega, who has been corrupted into one of the "Beautiful People," one of the ruling class of Holy Wood, and is now angry and violent though still physically perfect; he performs "Irresponsible Hate Anthem" and the Worm is in the audience.
In "Tied Up, Dried, and Dead to the World," the Worm wants to be like Omega, and tries to tell him this after the show, but Omega just taunts him ("don't you want some of this?") and says that if he wants power he'll have to take it ("Wake up and stop shaking, 'cause you're just wasting time").
The Worm is conflicted at first ("Tourniquet") but eventually has a revelation ("Cryptorchid") and begins his revolution by confronting Omega, mocking him ("Deformography") and then killing him and assuming his place ("Wormboy").