Normie

Etymology

From normal plus the diminutive -ie. It circulated on imageboards like 4chan in the early 2010s as a milder successor to the slur "normalfag," and broadened into general slang for anyone outside a given niche.

noun · /NOR-mee/
An ordinary, mainstream person seen from inside a subculture — someone who doesn’t get its in-jokes, tastes, or references.
What it names
It gives a subculture a word for the outside majority, marking the boundary between insiders and everyone else. The tone ranges from affectionate teasing to mild contempt, and it often reveals more about the speaker’s sense of specialness than about the person labeled.
Example
The finale was written for normies — none of the deep-lore payoffs the forums wanted.
Related idea
Where an NPC implies someone thoughtless or automatic, a normie is simply mainstream — perfectly capable of independent thought, just outside the in-group.