>>55424127Journeys for example was pretty infamous for this in it's early years where Ash caught Dragonite and Gengar and the two were barely used until Masters 8 came along.
Then there was Dracovish who was barely seen for months after it was captured, Made people think it wasn't actually in the roster for battles.
Honestly they way modern writers use these Pokemon is one of my main fears for the Dolphin if Roy actually does catch it. Will it become a Kaiden 2.0 but worse? Like some have said it has it's Hero mode but it's strictly a Pokemon suited for water so we might barely see it.