Pokémon - Season 9 - Eps 21: Curbing the Crimson Tide!
There's big trouble in the big city when Ash and his friends pay a visit—a mysterious talking Pokémon in a crimson cloak known as Red Lighting has been battling all the Trainers in town, and it acts like a real supervillain when it wins! May's plans for a nice day out are ruined when Red Lightning humiliates her and her Squirtle, so now the heroes are out to uncover who or what is behind its activities.
About Pokémon

Title: Pokémon
First Air Date: 1997-04-01
Last Air Date: 2023-03-24
Status: Ended
Rating: 7.9/10 (from 1971 votes)
Language: JA
Seasons: 26
Total Episodes: 1235
Network: TV Tokyo TV Aichi TVQ TV Osaka TVh TSC
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Shogakukan Production, TV Tokyo, OLM, Shogakukan-Shueisha Productions, SOFTX, TV Tokyo Medianet
Synopsis
Join Ash accompanied by his partner Pikachu, as he travels through many regions, meets new friends and faces new challenges on his quest to become a Pokémon Master.
Cast

Rica Matsumoto
Satoshi (voice)

Ikue Otani
Pikachu (voice)

Daiki Yamashita
Gou (voice)

Kenyu Horiuchi
Narrator (voice)