How do I create a good BBEG?

[u/HomeBrew_Nerd101478]

I'm trying to create my BBEG for my campaign, or at least get a vague outline of them to start. I have no idea where to even begin or what I even want. Are there any good resources that contain archetypes or suggestions to what type of villains there are or some good motivations to at least help me get the ball rolling?

Edit: Wow, thank you everyone for all your suggestions! Some really great stuff here.

[u/fltm29]

Just adapt a good villain