Sorcerers Apprentice
Hero
"Backgrounds" of the game mechanical kind in 5e are only ever mentioned in the context of creating Player Characters. There is no reason to think that NPCs have them. 0th level characters also aren't a thinkg in 5e. Player characters have levels, NPCs have Challenge Ratings.but the things i mentioned didn't come from neither class nor levels, species and background are things i would fundamentally expect every 0th level character to have(barring perhaps background for very young children), you can't exist and not have a species, how can you live your life and not have ANY sort of background life experience?