Frankenstein appears briefly in "Fate/Grand Carnival" as a cameo. She is portrayed as the cat-like "Mysterious Neco W," wearing a miniature version of her signature bridal gown outfit, directly referencing her original Berserker-class design. This parody version joins the carnival's comedic events. Her portrayal remains a purely visual homage; no character arcs, backstory exploration, or substantive narrative role emerge within the special, leaving her established lore and personality traits from other Fate media untouched.