-They have a metal skeleton, but human insides, skin, etc. All except Plushtrap, he has like a stuffing inside him, like the plushes.
-They can turn into plush,all except Nightmare. They can only become nightmares from 12am to 6am. Nightmare simply disappears in another time.
-Plushtrap's plush ver is just his animatronic version.
-Chica's cupcake isn't alive, it's a real cupcake that she cooks using people, she also makes pizza!
-Nightmare is a real demon who came from a dream world(or a backrooms) and created the "nightmares", using crying child's fears.
-They became real because kid himself has a unique power that can't be described.It appeared after the bite of 83
-The nightmares (except for the Nightmare itself) have changed their character depending on how the child perceives them. They are still evil, but they treat him as a friend.
-Some of their features are based off their prototypes - bullies in masks. For example:Kid in Freddy's mask had three little brothers,kid in Bonnie's mask was the kindest to him, so Bonnie is good too.
-their animal ears are real, they don't have human ears.(except chica of course)
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