Prestige Precept Center

The Prestige Precept Center (also referred to as the Pre Gym) is a location that first appears in Pokémon Colosseum. It is founded and created by Justy and it can be found within Phenac City. It reappears in Pokémon XD: Gale of Darkness with Justy still managing it.

History
Colosseum

In this game, the Prestige Precept Center plays a rather minor role since visiting it is optional in the game. Wes can come here to battle with Justy but must battle other trainers first. After battling them, Wes can take on Justy himself. After beating Justy, he will reward Wes with TM27 (Return).

XD

The Prestige Precept Center plays a more major role in this game since now, it must be visited in order to progress in the game. During his first visit to Phenac City, Michael notices a group of Justys arrive from the Pre Gym. These Justys turned out to be the Hexagon Brothers meaning Cipher has already targeted Phenac City. It turns out that the mastermind of the takeover, Snattle, locked Justy, the mayor, and most of the citizens in the Pre Gym's basement. After Michael defeats Snattle, he can go to the Pre Gym to unlock the elevator allowing Justy and the others to escape. Pleased, Justy askes for Michael's PDA number telling him he will give Michael a call when the Pre Gym will be back up and running. Later, Justy does so and Michael can battle through the trainers and, eventually, Justy himself. If Michael defeats Justy, he will be rewarded with the TM Double Team.

Trainers
Colosseum XD
 * Cooltrainer Botan: Sunkern (Lv. 27), Hoppip (Lv. 26)
 * Cooltrainer Liqui: Marill (Lv. 26), Surskit (Lv. 27)
 * Rich Boy Dugo: Trapinch (Lv. 27), Swinub (Lv. 27)
 * Lady Gwin: Geodude (Lv. 27), Rhyhorn (Lv. 27)
 * Pregymleader Justy: Sandshrew (Lv. 41), Cacnea (Lv. 41), Gligar (Lv. 41), Azumarill (Lv. 40), Sunflora (Lv. 40), Nosepass (Lv. 42)

During Cipher Invasion After Cipher Invasion
 * Cipher Peon Eloin: Kirlia (Lv. 22), Linoone (Lv. 20), Shadow Natu (Lv. 22+)
 * Cipher Peon Fasin: Remoraid (Lv. 22), Golbat (Lv. 22), Shadow Roselia (Lv. 22+)
 * Cipher Peon Fostin: Kadabra (Lv. 22), Sneasel (Lv. 22), Misdreavus (Lv. 22), Shadow Meowth (Lv. 22+)
 * Cooltrainer Quelor: Ledyba (Lv. 21), Spoink (Lv. 21), Bellossom (Lv. 21)
 * Cooltrainer Teslor: Sunflora (Lv. 22), Furret (Lv. 22), Linoone (Lv. 22)
 * Supertrainer Nopel: Kecleon (Lv. 23), Azumarill (Lv. 23), Yanma (Lv. 23)
 * Matron Kalus: Plusle (Lv. 24), Minun (Lv. 24), Absol (Lv. 24)
 * Pregymleader Justy: Sandslash (Lv. 29), Cacnea (Lv. 29), Gligar (Lv. 29), Nosepass (Lv. 29)

Trivia

 * In Pokemon Colosseum, the Pre Gym trainers mainly had, , and Pokémon.
 * Oddly, in Pokémon XD: Gale of Darkness, Justy has fewer Pokémon and are a lower levels from Colossum.