in black ops 3 zombies (blundell), a lot of time travel and paradoxical cycles from that time travel gappens and there’s a bunch of whack lore about a battle between good and evil across multiple dimensions. but that’s all in service of you playing as alternate universe versions of the player characters from black ops 1 zombies, and killing off the BO1 versions of those chargers befur they can cause the convulted apocalyptic ending that happened in BO1, the (very bleak) results of which are explored in BO2 zombies
in BO4 zombies, blundell goes ”actually that ending served the interests of an evil god character, when the true good ending is to destroy the entire black ops zombies multiverse and leave no trace”. this is really not an exaggeration. everybody fucking dies and none of this ever happened
(the BO1 player characters come back in later black ops zombies games anyway, if in new storylines, because fuck you)