Ryukyu City

There is an unofficial Gym here that specializes in the type good against your starter type: If you picked Chikorita, it's a Fire-type Gym, if you picked Flambear, it's a Water-type Gym, and if you picked Cruize, it's a Grass-type Gym.

Battles:

Pokefan Trevor if you picked Chikorita (Lv53 Charizard, Lv55 Magmar, Lv56 Rapidash, Lv56 Bomsheal)

Pokefan Trevor if you picked Flambear (Lv53 Mantine, Lv55 Omastar, Lv56 Blastoise, Lv56 Grotess)

Pokefan Trevor if you picked Cruize (Lv53 Vileplume, Lv55 Belmitt, Lv56 Bellossom, Lv56 Victreebell)