Pokémon: Diamond and Pearl · Diamond and Pearl arc
DP037 · The Grass Menagerie!
ハクタイジム！VSナタネ！！
Synopsis
What happens.
Ash and his friends arrive at the Eterna Gym for Ash's second Sinnoh Gym battle. Gardenia arrives shortly after and they prepare for their official battle.
Synopsis adapted from Bulbapedia's DP037 entry, used under CC-BY-NC-SA 2.5.
Story arc · DP001-DP052
Diamond and Pearl.
Ash arrives in Sinnoh, meets Dawn and her Piplup, reunites with Brock. Picks Turtwig from Rowan; the Sinnoh badge run begins. Paul introduced as a foil.
Read the full Diamond & Pearl guidePokémon featured · 10
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 Diamond and Pearl.
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.