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- “In order to balance the new force of good, the spell has to create the opposing force of evil. The worst of everything. Everyone's nightmare.”
- ―Willow Rosenberg[src]
"The Monster" was how Buffy Summers referred to a demon was created via thaumogenesis after Jonathan Levinson cast an augmentation spell to make himself super-humanly popular. Jonathan killed it himself by shoving it into a deep pit to save Buffy, breaking the spell.