I feel like Everett Larson (Fazbear Frights) would be in the spdr-tronic au so here's a sketch of his design! In this he's the newest detective in the hpd, partnered with clay. He's also significantly younger than he is in frights bc of the time setting (I couldn't figure out when the stitchwraith stingers are set? but I saw a few say 2010s) and he isn't married to angela, in fact he hasn't met her yet and is dating another woman.
I should also mention I haven't read frights so all I know about him is from the fnaf wiki and things my brother has told me (we own the first four books, but I haven't gotten to them since I'm still reading the twisted ones). If someone knows more about frights I'd love to hear more about some notable characters and which ones would be cool in the au!! I have no idea who the villains are gonna be besides william so yeah it'd be cool