Baby Minigame
There is a secret, 2D minigame in Five Nights at Freddy’s: Sister Location that is unlocked by hovering over the blueprints option in the Extras menu, but not selecting it. Eventually a pixelated image for the twisted animatronic will appear, and you can click on it, which grants access to the game.
If done correctly, you will obtain an ice cream cone that you must take back to the beginning of the short level and place on the ground as a lure. A little girl will appear and walk towards the cone, but just before she picks it up, a claw flashes out from Baby and snatches the little girl, placing her inside of the animatronic right as the screen goes black. This feeds back into the children-killing notion hinted at by the blueprints and the history of FNaF.