I kind of got the idea  from Markiplier...

He mentioned that Ballora didn't fit into the place because of things.

I'm watching some of MatPats theories and I saw the Marionette.

What if Ballora and the Puppet are the same?

They have the same type of body shape and, you don't normally see their eyes unless
A. Ballora's faceplates extend on her jumpscare.
B. The Puppet on the attack when they attack.

Isn't that different? Their body shape kind of fits as well. Ballora has a skinny body and is fairly taller than the other animatronics.

The Puppet is long and skinny and is taller than all the others...

Mark also had said that all of the other animatronics betrayed Ballora.

She's the only animatronic that is not wanting to get revenge out of the rest of them.

The Puppet wants to put everyone back together.

That's one of the contradicting from MatPat.

He says that the Puppet is out for revenge to destroy the purple guy (Mr. Afton).

Though... It makes some small sense.

But Why would Puppet do that? All you know they want to do is put them back together. They were the first person to get killed so they know what happens.

Another part is in FNAF2.
The only reason the Marionette comes out us if the music box is not wound up.

When Ballora has music louder is when she is near.

Those are showing that they are present and, if the music box is unwound completely and speeds up, the Puppet attacks.

When Ballora hears you and her music gets louder, she attacks.

They seem the same... don't they?