I adore fics where the reader enters the plex after the virus has set in and their goal is to tentatively befriend and help moon but woof am I excited about writing the other option.
Where the reader comes before the virus, they befriend a sweet gentle moon who doesn't put any stock in the villain character he's meant to play because nobody actually fears him, he gets the odd scare now and then on accident or on purpose (especially at readers expense) but he's regarded as one of the sweetest animatronics in the plex!
And then he slowly realises he's scaring people on accident more, his memory is becoming spotty more often, he's finding odd red and brown flakes of something between his casing, he attacks someone with no regard because they hurt his friend.
And he's so scared. Sun is too but moon notices that fear went far too quickly from being for moons well being to being a fear of moon himself and he can't help but resent his counterpart.
He stops talking as much, does his duty to the bare minimum and nothing more. And then he hurts his friend. Badly. They hurt him back in turn.
The reader gets new orders, they are to help sun and to keep moon in check.
He's removed from naptime. He's purely security, he remembers so little for a while. And then he suddenly becomes lucid again.
And he WANTS to hurt and scare. He laughs at his friends fear and concern for him and that fear and concern turns to anger and frustration.
He rips himself apart to harm his twin in spite, he realises he likes listening to the little voice commanding him to do wrong.
