|First appearance||The Joy of Creation: Story Mode|
Endo R, also known as Blue, is an antagonist in The Joy of Creation: Story Mode.
Endo R is a withered Endoskeleton. Its body is covered in wires, around the torso and limbs. The front of Endo R's face is missing, leaving only the bottom jaw, like Withered Bonnie's Endoskeleton head. Similarly, the left arm is gone, leaving a mess of wires where it was. Endo R's eyes are dim red pinpricks as well.
Endo R first appears in the Basement. The player will see hallucinations warning the player that they aren't safe. The player must then return to the bathroom. Endo R only attacks if you do not return to the bathroom in about 20 to 30 seconds.
Endo R later appears in The Attic, where he will approach from the right side. If the player hears footsteps coming from the right, they must shut the right door to prevent Endo R from getting inside.
- The R in Endo R's name may stand for Rabbit, as it's implied to be a Bonnie Endoskeleton.
- Its second name may be a reference to Bonnie's fur color.
- It is unknown why Endo R does not enter the bathroom knowing that the player is inside.
- However, there is a glitch where Endo R will still come after the player even if they enter the bathroom. The only known way to fix this is to either restart the night or get close enough to the wall so that Endo R can kill the player.