(Japanese: ダンジョン攻略！？ トラブルで谷間の発電所！Dungeon Capture!? Trouble at Valley Powerplant!) Is the 24th episode of the Battle Showdown Series.
- Ash's Ambipom learns Shock Wave
- Ash Ketchum
- Emerald (flashback)
- Pikachu (Ash's)
- Meowth (Team Rocket's)
- Riolu (Sapphire's)
- Piplup (Dawn's)
- Ambipom (Ash's)
- Staraptor (Ash's)
- Cyndaquil (Dawn's)
- Yanmega (Jessie's)
- Carnivine (James's)
- Espeon (Red's)
- Marill (Ayya's)
- Feraligatr (Ayya's)
- Pidgeot (Ayya's)
- Magnemite (Benjamin's)
- Luxray (Yoko's)
- Sceptile (Emerald's;Flashback)
- During Ash and Red's battle the music that plays corresponds Red's battle in Mt.Silver in HGSS game.
- Meowth's line "We keep going and going" is a pop culture reference to the Energizer Bunny.
- In Red's Flashback, Emerald's Sceptile was seen using Iron tail in a battle aginst Ash's Pikachu.
- In one scene, Ayya breaking dow the fourth wall by saying this episode only got one hour.
- During the scene where Crystal talking to Sapphire, the line on her hat was white instead of pink.
- About a half-way hour through the episode, Ash, Brock, Dawn, Erick, and Ayya start waving to the security cameras. The cam on the left Ash and friends in front of the sleeping man show some corridor where Red, Crystal, Sapphire, and Gold were enter. However, When Team Rocket comes into the room, the camera appears to have changed, showing the corner of corridor where Pikachu, Yellow, Green, Piplup, and Cyndaquil were.
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