Pokémon: Advanced Generation · Battle Frontier arc
AG174 · New Plot, Odd Lot!
ハーリー＆ロケット団！悪役同盟結成！？
Synopsis
What happens.
Nurse Joy and Chansey return May's Pokémon to her as she is preparing herself for the upcoming Mulberry City Pokémon Contest.
Synopsis adapted from Bulbapedia's AG174 entry, used under CC-BY-NC-SA 2.5.
Story arc · AG146-AG192
Battle Frontier.
Cast returns to Kanto. Ash faces seven Frontier Brains (Spencer, Tucker, Lucy, Greta, Noland, Brandon, Anabel). Defeats all of them, including legendary Brandon (Regice + Registeel + Regirock). Turns down a Frontier Brain offer.
Read the full Advanced Generation guidePokémon featured · 19
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 Battle Frontier.
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.