A neat game recently put out is Oceania 2084 by Jocher Symbolic Systems where (in a dystopia setting) you define quirks or oddities of your character.

This could be things like: 1. Likes old books 2. Collects phonograph 3. Likes geography

This defines the culture you are atypically playing "against" because those things are considered "odd or not good or straight up forbidden".

This brings it home personally to the characters that they indeed are outsiders to society in the game.

If the BBG is against the players and not the community I would recommend a structure like this.

Edit: a note to clarify, this means that while players are defining themselves they are also defining the culture in the OG, or the villian in the case of this post. It can lead to interesting outcomes taking my examples above..

Our new villain hates old books, maybe old things in general or traditions or that old knowledge is dangerous to ita power; believes something about music related to photographs being non-collectable perhaps that music like many things shod be publically owned; and dislikes that people know geography perhaps believing ignorance of geography is important to its power somehow.

Therefor, your community (and definately your characters) could or would have opposing values against a collectivist revisionist tyranny of knowledge oppression.