BBEG (NPC Type)
A “big bad evil guy” is usually the adventure's main villain, much more powerful than a boss. BBEGs are meant to be a recurring element throughout the adventure, so you shouldn’t throw a BBEG at the PCs directly, unless you’re prepared for them to die accidentally. BBEGs are constructed in the same way as a PC and have additional perks and stances that go above and beyond other NPCs. They have wounds and experience death’s door like PCs.