The Nightmare Before MediEvil logo.png

The Nightmare Before MediEvil is a fanfiction crossover Halloween special written by MarioFan65. This story is a crossover with The Nightmare Before Christmas and MediEvil. It was released on October 9, 2018.


  • Sir Daniel
  • Jack Skellington
  • Sally
  • Kiya
  • Zarok
  • Oogie Boogie
  • ???



  • This is the first Crossover Omniverse Saga special to not start off first as a full fanfiction story like the Club Penguin and Happy Feet stories and the Shantae and Aladdin stories.
  • This is the first Crossover Omniverse Saga special without the title of the holiday special next to the crossover title.
  • The story is a prequel to the entire Crossover Omniverse Saga, taking place 111 years before the actual events of the mainline crossover stories like Mario and Spyro and Club Penguin and Happy Feet.
  • Coincidentally, a parody poster of Sir Daniel Fortesque in a Nightmare Before Christmas setting was released a year later in favor of the MediEvil PS4 remake.
    • The first MediEvil was in development back then for PlayStation and has influence to The Nightmare Before Christmas.
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