NPC's are Non Playable Characters.
“Gustav The Trader is an NPC that survives the Zombie Apocalypse along with the player's...Gustav The Trader
“The Riffs are around when starting a new city or starting a new game entirely. They show up to...The Riffs
“The Last Judgement Gang is a Catholic-Remnant cult that believe that their god sent the zombies...Last Judgement Gang