Cassidy is actually brunette, and she dyes her hair black to look more edgy.

The girls room in FNaF4 is the Older Brothers room, and he bullies BV out of shame.

The new Princess Quest minigame portrays William being possessed by Glitchtrap, who then leads him to kill the children.

Vanessa is secretly Glitchtrap, and she traveled back in time using the ball pit to possess William and directly create herself.

Princess Quest? What's that?

Thanks. I've been busy all day.

William Afton didn't kill any kids, he's just on the run for Tax Evasion.

The Ball pit is a time machine. Glitchtrap traveled back in time to the past, committed the MCI, and framed William Afton for the murders.

As we all know, the ball pit is a worm hole. This is 100% canon.

William Afton is secretly WilburSoot. After going insane and blowing up the DreamSMP, he got into child murder.