Neptunia is a mutated humanoid fish in Darkwing Duck. Of any character on the show, Neptunia suffered the most from the erratic syndicated scheduling and having her origin episode air on Saturday morning on ABC. Her only other episode apart from the "Justice Ducks" two-parter - "Something Fishy" - aired a week later, and anyone who only watched the syndicated episodes was left wondering exactly who this character was, where she came from, and why she never appeared again.