Cassidy theory
https://www.youtube.com/watch?v=1zERP5Nw1CA
The video theorizes that cc is the one burried in midnight motorist, therefore drawing a grave that she never got. Her coffin is then the box from fnaf 4. She also posseses the fred plush (and most likely also golden freddie) of c.c., when she speaks there are eyes visible, otherwise not. She also convinces c.c. that wiliam afton hates c.c., for cassidy said to c.c. "he hates you". maybe cassidy is trying to get back at w. afton.
when the plush says the famous I will put you back together phrase the eyes are visible. maybe cassidy was talking to the family. c.c. was there, the mom probably since her child is dying and the father in the plush. cassidy will put the family back together, in SB. the whole family is back together. Michael as glamrock freddie, explaining why he was nice to gregory, c.c. but in robot form or sum. the mom as ceo of the pizzaplex and william afton as glitchtrap. maybe cassidy tryna make william afton watch his whole family suffer? But idk i dont think cassidy has such a big role.