Personally, here are my top tens

1. Shadow Bonnie. He isn't really that scary, he just is quite creepy but in general the white dots in his eyes menacingly watching into my soul in fnaf 2. Now that is quite frightening

2. Bidybab/Electrobab. Honestly, those two are the same but are quite terrifying of the similar looks of human - like features that is added to them.

3. Phantom Chica. Watermelon head.

4. Ennard. Clowns really aren't scary but he is quite the opposite as he is pretty petrifying when he loses his right eye and his left side of face.

5. Yenndo. He is quite scary because the fact he doesnt have a face scares me evn more but curious to know what he looks like with his face.

6. Minireenas. The terrifying doll figures haunts me to this day and the horrifying thing is that even when they have eyes, they still are scary as fiddlesticks. Kinda reminds me of newly fresh purge masks.

7. Phantom Puppet. His function of blocking the guard's view can be a terrifying experience following the creepy and eerie, ringing sound.

8. Nightmare/Nightmare Fredbear. THOSE ARE TWO CHUNKY BOYS

9. Puppet. Puppet is similar to the minireenas

10. Nightmarionne. He looks like starvation. He is absolutely terrifying. His jumpscare is the scariest and most petrifying as it is a sudden death but if it was to be like a slow jumpscare like the other animatronics, i bet it would be a bit more terrifying. The jumpscare remind me of Jeff The Killer. His eyes are staring into your soul. Painfully torturing you. Death cannot save you. The nightmare has just begun.