Pokemon Stadium 4 (US Game)/Gym Leader Castle (Round 2) is Pikachufreak's idea.
Trainers[]
Oreburgh Gym[]
- Youngster Ryan - Uses Slashiny, Graviny, Rhydiny, Sudoiny, Vibraviny, Cameriny
- Gym Leader Roark - Uses Rampardos, Armaldo, Rhyperior, Omastar, Shuckle, Golem
Eterna Gym[]
- Lass Laurie - Uses Oddette, Pichette, Reepette, Lilette, Seedette, Budette
- Beauty Mara - Uses Woopdy, Squirtdy, Remody, Seeldy, Rhydy, Swidy
- Aroma Lady Corrie - Uses Buroma, Cacroma, Bulbaroma, Exeggroma, Bellsroma, Sunkroma
- Gym Leader Gardenia - Uses Roserade, Venusaur, Victreebel, Jumpluff, Shiftry, Cacturne
Veilstone Gym[]
- Blackbelt Wendell - Uses Lee, Toxi, Prime, Loom, Chan, Top
- Gym Leader Maylene - Uses Lucario, Machamp, Medicham, Hariyama, Heracross, Gallade
Pastoria Gym[]
- Tuber Anthony - Uses Wartotube, Octitube, Seaktube, Krabtube, Seadtube, Mertube
- Fisherman Dean - Uses Nairish, Omastish, Lantish, Sharpedish, Dugtish, Vibravish
- Sailor Hubert - Uses Fearlor, Nidoklor, Cloystlor, Azumalor, Goldlor, Milotlor
- Gym Leader Crasher Wake - Uses Floatzel, Blastoise, Kingler, Starmie, Quagsire, Wailord
Hearthome Gym[]
- Camper Rodrick - Uses Typhlotent, Electitent, Kazamtent, Donptent, Rapitent, Dodritent
- Picnicker Melanie - Uses Pachibask, Tonbask, Ninebask, Spinbask, Ursabask, Shelbask
- School Kid Eddy - Uses Hauntling, Misdreling, Poryling, Kecling, Rinoling, Lickiling
- Gym Leader Fantina - Uses Gengar, Mismagius, Dusknoir, Spiritomb, Sableye, Banette
Canalave Gym[]
- Worker George - Uses Luxker, Drowker, Sudoker, Tuffker, Ivyker, Chanker
- Gym Leader Byron - Uses Bastiodon, Empoleon, Steelix, Aggron, Skarmory, Magnezone
Galactic Takeover[]
- Team Galactic Cyrus - Uses Weavile, Mightyena, Umbreon, Cacturne, Shiftry, Crawdaunt
- Team Galactic Saturn - Uses Toxicroak, Muk, Qwilfish, Swalot, Weezing, Drapion
- Team Galactic Mars - Uses Purugly, Kangaskhan, Nidoqueen, Espeon, Blissey, Gardevoir
- Team Galactic Jupiter - Uses Skuntank, Slowbro, Tauros, Sharpedo, Feraligatr, Tyranitar
Snowpoint Gym[]
- Ace Trainer M Benton - Uses Zardstor, Granstor, Slashstor, Cradistor, Carnistor, Spinstor
- Ace Trainer F Alissa - Uses Rhyperiance, Gutorance, Yanmegance, Wrathance, Starmance, Floatance
- Gym Leader Candice - Uses Abomasnow, Glalie, Jynx, Lapras, Mamoswine, Cloyster
Sunnyshore Gym[]
- Guitarist Dexter - Uses Raitar, Trodetar, Viretar, Amphatar, Manetar, Lantar
- Gym Leader Volkner - Uses Luxray, Jolteon, Plusle, Minun, Rotom, Zapdos
Elite Four[]
- Elite Four Aaron - Uses Butterfree, Ariados, Beedrill, Beautifly, Vespiquen, Armaldo
- Elite Four Bertha - Uses Hippowdon, Quagsire, Flygon, Rhyperior, Nidoking, Camerupt
- Elite Four Flint - Uses Infernape, Flareon, Torkoal, Magmortar, Ninetales, Houndoom
- Elite Four Lucian - Uses Bronzong, Slowking, Alakazam, Wobbuffet, Solrock, Lunatone
- Champion Cynthia - Uses Garchomp, Lickilicky, Primeape, Salamence, Venusaur, Cloyster