MistyfromPokémonwearing hercostume mermaid tailthat was first shown in"Hanada Gym! Underwater Battle!"(ハナダジム! すいちゅうのたたかい!,Hanada Jimu! Suichū no Tatakai!), episode 63 of the firstPokémonanime series,Pokémon: Indigo League, which aired on 3 September 1998 in Japan, later aired on 23 September 1999 in the United States as"The Misty Mermaid".