Ballora. The ballerina of the Sister Location. Many people have been speculating about her eyes, and where her name has come from. Well. This theory COMBINES both of those speculations. The reason why Ballora doesn't open her eyes... Well. She will open them at night. So, when she opens her eyes, the animatronics would go to "Kill Mode" or whatever you wanna call it. She ISN'T a demon at day... But at night... She's a cold-blooded murderer.