Deep down under the Mega Pizzaplex, You inspect the Blob and see multiple parts from different animatronic characters. One of the animatronic heads attached to it speaks:

Circus Baby: “Well well well.. what do we have here?” Bonnie the Bunny: “A visitor! It’s been a while since I’ve seen anyone else down here besides y’all’s annoying selves!” Chica the Chicken: “Screw off Bonnie!” Funtime Freddy: “I’m surrounded by idiots..” Mangle: “I hate you all.” Marionette stays silent