Que veut dire NPC ?

Borrowed from gaming, where NPCs are background characters running on scripts, it became an insult for people who seem to just repeat whatever their favorite news channel says. Calling someone an NPC basically says they have zero main-character energy and their opinions came pre-loaded. Usually thrown around in political arguments by people who are, ironically, also repeating stuff they saw online.

“Bro heard one speech from Senator Branold Dump and now he’s an NPC for life.”