Heya there everyone! I'm out of my Undertale phase and I'm now into My Hero Academia. So I decided I'd be making an AU for it based off of Five Nights at Freddy's. This AU will be focusing around TodoDeku, KiriBaku, and ShigaDabi. For now I have a few details on the AU for now. Just remember that not all of this sticks to the fnaf storyline, it is an AU.
Deku, Shoto, Bakugo, and Kirishima were the four main children that were killed and possessed the animatronic suits.
Bakugo was beyond pissed when they first possessed the suits. This is because of the fact that he got stuck with being Chica, the one he thought was the most girly and the one he disliked most.
Izuku/Deku is Freddy, Shoto is Bonnie, Bakugo is Chica, and Kirishima is Foxy.
About a year after the children's deaths, the creators of the animatronics changed their designs as a memorial for them.
Chica was redesigned to fit Bakugo due to false information told by the parents.
The parents were the ones that told the manufacturers about their children and who each one had said their favorites were.
It's pure coincidence that Chica was changed to memorialize Bakugo due to the information while Bakugo possessed Chica.
Bakugo actually tries to scare the nightguard, after trying to communicate with them and tell them that he's stuck in the animatronic, getting mad when they don't understand him and shut the doors on him.
Izuku desperately tries to speak to the nightguard, feeling upset when he can't.
Shoto is there to comfort Izuku when the efforts fail.
Shoto scares the nightguard since he's trying to help Izuku communicate with the nightguard.
Kirishima purely scares the nightguard because he's trying to test them.
Shigaraki is the Purple Guy, who has an accomplice in this AU.
Dabi/Touya is the accomplice of Purple Guy, helping him with the murder of the kids.
Because of lack of money and to get rid of any extra evidence that may have been left behind, Shigaraki and Dabi take jobs at the pizzeria.
Dabi was originally taking the day shift with Tomura at night shift, but Dabi had to take the night shift with Tomura due to complications.
Having them both as nightguards was an exception, since usually there's only one nightguard.
This is all for the AU that I have for now. Most of the details will be added when I begin writing the story. This will end up being a story that I'm going to write. More extra details might also be added at some point in a post like this one. When the first story part does come out, it'll be the prologue to the story.