Nightmare Eustace is a fan made antonigist in Abandoned Discovery Island.
He looks similar the normal Eustace except that he has sharp teeth, also claws in his gloves. He is also withered and missing a eyeball and a pupil in the other eye. He is also missing his right arm.
Nightmare Eustace has the same behavior as his original counterpart.
He will start at Night 5 and he can say the following things.
- "I will kill and murder you."
- "When you are dead i will eat you."
- "I will hang you to a rope!"
- "Kill yourself."