From Bulbapedia, the community-driven Pokémon encyclopedia.
Justy (Japanese: セイギ Seigi) is a young man who is renowned for being one of the best professional Pokémon Trainers in Orre. Tall, attractive, charismatic, and passionate - Justy has built up a large fan following, especially in Phenac City. For most of the young Pokémon Trainers in Phenac City, defeating Justy is the ultimate goal. Justy likes it this way, as he's highly enthusiastic about Pokémon battles. He is the only character in the games to have the Trainer class Pregymleader.
Justy is the Gym Leader of the Prestige Precept Center, often referred to as the Pre Gym, in Phenac City. Technically, the Center isn't a true Gym as it's not sponsored by a Pokémon League and doesn't hand out a Badge to winners. However, as it appears that Orre doesn't have a Pokémon League of its own due to the overall lack of many wild Pokémon or population, the Center can be considered the closest thing Orre has to a proper Pokémon Gym.
According to one of his students, he seems to slightly favor his Nosepass over his other Pokémon.
His battle style is highly unconventional, relying on evasion-raising moves and abilities such as Double Team and Sand Veil.
Justy gives out TM27 (Return) to Trainers who defeat him in Pokémon Colosseum, and in Pokémon XD, Trainers who defeat him will receive TM32 (Double Team). He will only fight Trainers who have a complete team of six Pokémon.
Pokémon
Pokémon Colosseum
Pokémon XD
In other languages