Nightmare is like some sort of Broken down his name should be "Broken Nightmare FredBear" But that doesn't mean it could be an animatronic in FNAF 1, 2 or 3....but we don't know why he's wearing a YELLOW hat and Bow, instead of PURPLE hat and there might be a WHOLE new story about the animatronic "Nightmare"

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This could be "Broken Nightmare FredBear"