I'm not saying i have any legitimate proof of this, but it seems very strange that the only main character missing from the ending cutscene is a Spring Bonnie. considering he's one of the main six who have both a role in and out of the cutscenes, i find it odd people barely talk about him in FnaF 4, aside from arguing whether or not it's springtrap or another spring Bonnie.

It's also a nice parallel to the scenes in three, because the doll's in that cutscene, disappear in EXACTLY the opposite order in which purple guy breaks them.

and at the end of both cutscenes, the rest disappear, leaving each victim on their own to deal with their pain.

Plus how fitting would it be, for the bite victim to be the one that takes out the killer?