

Episode 21: “Bye Bye Butterfree”
Pokémon · バイバイバタフリー
- 21 of 276
- August 19, 1997
- 24 min
- Aired
From Acino, the anime encyclopedia
| Series | Pokémon |
|---|---|
| Episode | 21 of 276 |
| Japanese | バイバイバタフリー |
| Original air date | August 19, 1997 |
| Episode length | 24 min |
| Studio | OLM |
| Previous episode | Episode 20: “Ghost Pokémon and the Summer Festival” |
| Next episode | Episode 22: “Casey! Psychic Showdown!” |
| Streaming | Netflix, Hulu |
“Bye Bye Butterfree” is episode 21 of the anime Pokémon. It first aired on August 19, 1997.
Summary
A summary of this episode has not been written yet.
Music in this episode
- OP 1“Mezase Pokemon Master” — Rika MatsumotoAnimeThemes
- OP 1“Pokémon Theme (Gotta Catch'em All)”English VersionAnimeThemes
- ED 1“Hyakugojuuichi” — Unshou IshizukaAnimeThemes
Where to watch
Streaming services that list Pokémon. What you can watch depends on your country. Acino does not host any video; each link leads to the service's own page.
Episode guide
About the series

PokémonTV series · 1997 · 276 episodes · OLM · ★ 7.42
Pokémon is a 1997 Japanese anime television series based on the video game by Satoshi Tajiri. It is animated by OLM. It aired from April 1, 1997 to November 14, 2002, with 276 episodes.
Read the article →References
- “Pokémon”. Kitsu. Retrieved October 22, 2026.
- “Pokemon”. MyAnimeList. Retrieved October 22, 2026.
- “Pokémon”. AnimeThemes. Retrieved October 23, 2026.
Episode titles and air dates come from Kitsu. The summary is written by Acino with AI assistance and checked so that it does not copy other sites.
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