In Battle Royal 151!, Hiroki was among the 151 Trainers taking part in the Battle Royal preliminary round of the Manalo Conference, which he entered with his Mudbray. After challenging the others to take him on, he was swiftly defeated, becoming the first to be knocked out. In the same episode's Poké Problem segment, he was shown being upset and angry after seeing the Top 16 being announced.
Hiroki is an egotistical Trainer. He was overly confident about his chances of winning in Battle Royal 151!, calling for the other Manalo Conference competitors to take him on. However, he suffered a quick defeat, bruising his ego.
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| Mudbray is Hiroki's only known Pokémon. It first appeared in A Guardian Rematch!, where it battled Ash and his Rockruff. It was eventually defeated by Breakneck Blitz.
It reappeared in a flashback in Beauty is Only Crystal Deep!.
Mudbray's only known move is Double Kick.
|Debut||A Guardian Rematch!|
Hiroki has competed in the following Pokémon League Conferences:
- Hiroki is modeled after his Japanese voice actor Abareru-kun, a cast member of Meet Up at the Pokémon House?, whose real name is Hiroki Kobari.
|This episode article is part of Project Anime, a Bulbapedia project that covers all aspects of the Pokémon anime.|