Pokémon: The Original Series · Johto League Champions arc
EP165 · Fossil Fools
こだいポケモンパーク! アルフのいせき!!
Synopsis
What happens.
While escaping a rainstorm, Ash and his friends enter what at first seems to be an empty castle. Soon after entering, they hear screaming and rush to the source, which turns out to be people receiving medical care from Pokémon.
Synopsis adapted from Bulbapedia's EP165 entry, used under CC-BY-NC-SA 2.5.
Story arc · EP161-EP212
Johto League Champions.
Continues the Johto badge run. Ash's Chikorita evolves into Bayleef; Brock's Onix evolves into Steelix. Team Rocket gets multiple character episodes that elevate them past gag villains.
Read the full Original guidePokémon featured · 14
Who appears.
Linked entries open the species page on the Pokédex. Items without a sprite (alternate forms, regional variants, generic group references) fall back to a name pill.
More from this arc
Other episodes in Johto League Champions.
Episode synopsis from Bulbapedia, CC-BY-NC-SA 2.5. Editorial context (arc affiliation, cultural moments, character signatures) hand-verified May 2026. Pokémon, character names, and series titles © Nintendo, Game Freak, Creatures Inc., The Pokémon Company, OLM Inc. This is an unofficial fan reference.