U.N. Owen
In Brightest Day, In Blackest Night ...
To copy and paste an older version of the FAQs https://forums.serebii.net/threads/...ore-posting-jan-24-2013.561725/#post-14174179
A. This is actually a vague question to answer, considering how, if you think about it, the anime never actually defined the term “Pokémon Master”. No other form of Pokémon media has defined the term, either, nor is there anything that implies it means capturing every Pokémon.
While we know from episode dialogues that you’ll be a Top Coordinator as soon as you win one Grand Festival, the same can’t be said for ‘regular’ Pokémon Trainers, apparently.
People like Tyson and Tobias, who have both won regional League tournaments, have never been called Pokémon Masters – and not even Lance or Cynthia, who’re of an even higher rank, have been referred to as such.