The Endoskeleton has several different counterparts in FNaF World. He may refer to:
- Endo-01, the original variant from Five Nights at Freddy's.
- Endo-02, a mysterious hallucination from Five Nights at Freddy's 2.
- Endoplush, a small, plush-like version of the Endoskeleton exclusive to FNaF World.
- Mendo, an in-game NPC based on the endoskeleton exclusive to FNAF World.
- Mad Endo, a boss based on the endoskeleton.
- Overclock, a more powerful version of Mad Endo.
- Gold Endo, a golden version of Mad Endo.
- Quad Endo, a enemy in FNaF World: Halloween Edition.
- Endo-Upgrades, the shop owned by Mendo.