There are 4 Teams in the "game". You can choose to be in any team.

Team Eagle:
Myself: Houndoom, Flareon, Raichu, Blastoise, Flygon, Nidoqueen, Umbreon, Meganium, Azumarill, Whiscash, Pidgeot, Miltank, Lapras, and Skeptile

Misty: Gyarados, Walrein, Clefable, Meganium, Blastoise, Dodrio, Dustox, Lickitung, Mantine,Starmie, Seaking, and Corsola

Sally Acorn: Umbreon, Ursaring, Grunpig, Miltank, Exploud, Kangaskhan, Furret, Linnone, Primeape, Pinsir, and Solrock

Drew: Flygon, Masquerain, Roselia, Vileplume, Crawdaunt, Grumpig, Kangaskhan, Manectric, Rhydon, Raticate, Muk, and Furret

Wallace: Milotic, Whiscash, Lapras, Exeggutor, Huntail, Forretress, Mawile, Xatu, Rapidash, and Snorlax

Whitney: Miltank, Flareon, Clefable, Persian, Claydol,Delibird, Dustox, Metang, Quagsire, Tentacruel, and Nidoqueen

Espio: Skeptile, Ninjask, Beedrill, Venomoth, Kangaskhan, Weezing, Arbok, Electabuzz, Muk, Ariados, Cacturne, Poliwrath, and Scizor.

Blaze: Zangoose, Tauros, Magmar, Electabuzz, Sneasel, Breloom, Granbull, Hypno, Lickitung, Raticate, and Swellow

Team Spechno:
Sonic: Raichu, Charizard, Jolteon, Flareon, Sandslash, Dragonite, Tyranitar, Suicune, Lugia, Arcanine, Slaking, and Nidoqueen

Tails: Raikou, Electabuzz, Swellow, Skarmory, Pidgeot, Fearow, Noctowl, Volbeat, Ninetales, Xatu, Manectric, and Ampharos

Chris: Hreacross, Whiscash, Pinsir, Metang, Shiftry, Granbull, Solrock, Cacturne, Mantine, Exeggutor, Linoone, Huntail, and Manectric

Max: Mightyena, Dodrio, Golduck, Kirlia, Stantler, Venomoth, Muk, Marowak, Sudowoodo, and Vigoroth

Norman: Slaking, Vigoroth, Snorlax, Girafarig, Tauros, Arbok, Absol, Castform, Forretress, Magmar, and Persian

Winona: Swellow, Altaria, Skarmory, Zangoose, Ursaring, Tropius, Armaldo, Banette, Starmie, and Gligar

Fox McCloud: Tentacruel, Raichu, Skarmory, Breloom,Torkoal, Claydol, Mawile, Slowking, Arbok, and Alakazam

Cosmo: Bellossom, Sunflora, Roselia, Starmie, Corsola, Exeggutor, Claydol, Butterfree, Banette, Chansey, and Gorebyss

Team Tyranitar:
Shadow: Sneasel, Misdreavus, Gengar, Typhlosion, Tyranitar, Dusclops, Camerupt, Sharpedo, Meatgross, Mightyena, Porygon2, and Ursaring

Knuckles: Blaziken, Houndoom, Rhydon, Aggron, Machamp, Hitmonchan, Primeape, Armaldo, Medicham, Arcanine, Entei, and Cradily

Rouge: Crobat, Absol, Murkrow, Banette, Ampharos, Sableye, Hitmonlee, Cacturne, Girafarig, Crawdaunt, Farfetch'd, and Tentacruel

Brock: Forretress, Ludicolo, Golbat, Electabuzz, Rhydon, Onix, Relicanth, Pinsir, Lickitung, Kingler, and Shiftry

Jasmine: Steelix, Magneton, Aggron, Tauros, Piloswine, Mawile, Dugtrio, Aerodactyl, Banette, Lunatone, and Jynx.

Vector: Feraligatr, Walrein, Aggron, Scizor, Nidoking, Vigoroth, Quagsire, Octillery, and Zangoose

Falco Lombardi: Fearow, Mightyena, Scyther, Armaldo, Kabutops, Raticate, Ursaring, Dodrio, and Weezing

Brawly: Hariyama, Machamp, Poliwrath, Milotic, Pelipper, Raticate, Noctowl, Glaile, and Qwilfish

Team Roseash:
Ash: Pikachu, Groyvle, Charizard, Glaile, Sweelow, Heracross, Arcanine, Vaporeon, Lapras, Manectric, Snorlax, and Torkoal

May: Beautifly, Zangoose, Venusaur, Feraligatr, Altaria, Milotic, Latios, Jolteon, Gardevoir, Illumise, Ninetales, Combusken, and Clefable

Amy: Togetic, Delcatty, Salamence, Swampert, Tropius, Espeon, Kingdra, Ninetales, Dewgong, Swellow, Wigglytuff, Latias, and Lanturn

Cream: Plusle, Minun, Spinda, Masquerain, Luvdisk, Farfetch'd, Chimecho, Chansey, Castform, Butterfree, Azurill, and Eevee

Flannery: Torkoal, Stantler, Magcargo, Camerupt, Magmar, Weezing, Mightyena, Golem, Gligar, and Ninetales

Clair: Kingdra, Nidoking, Arcanine, Quagsire, Salamence, Flygon, Arbok, Ludicolo, Hypno, Gyarados, and Kangaskhan

Krystal: Ninetales, Zangoose, Golduck, Lanturn, Kecleon, Electrode, Donphan, Lapras, and Rapidash

Gary Oak: Umbreon, Arcanine, Nidoking, Nidoqueen, Pelipper, Magmar, Hariyama, Gyarados, Dugtrio, Beedrill, and Kangaskhan

Those are the teams. Please read & review.