Unlock all characters to unlock The Fan as a fifth party member. The Fan works automatically by randomly ending battle with its laser beams. It cannot kill Bosses instantly, but does reduce their health over time.Exploding Fredbears
Set Fredbear as your party leader, and speak to the Fredbear NPC. Both Fredbear's eyes will glow and the message "The same Fredbear can't occupy the same space at the same time" will appear and they will explode. A message stating "Universe end" and "The end" will then appear.