>A Gentleman in one of the houses is a famous Trainer from a foreign country. In the English versions, he speaks Japanese, while in Japanese and European versions, he speaks English (with minor variations depending on the language). His speech: "I see. I can tell just by looking at you that you're not a run-of-the-mill Trainer. I recommend that you keep on training and then compete with the world's best at the Pokémon World Championships." (Japanese: 「フム⋯⋯ みただけで わかるよ キミは ただもの ではない トレーナーだ そのうでを さらに みがいて せかい⋯⋯ ポケモンワールドチャンピオンシップスに チャレンジすることを おススメするよ」)
He's not there for any specific reason, but if there is a reason, it's to encourage to compete in the Pokemon World Championships, as the translation of the Japanese text, as stated above, is "I see. I can tell just by looking at you that you're not a run-of-the-mill Trainer. I recommend that you keep on training and then compete with the world's best at the Pokémon World Championships."
Hope this helps!
Source
