Master Goldeen

IAAAJS, also known as Master Goldeen, is a Goldeen that AJ caught in Tohjo Falls with the Master Ball. Despite not being used in battle, he became famous because a Master Ball was used to catch him.

Name
Goldeen's nickname came from the fact that the Master Ball was used to catch him.

Trivia

 * His nickname of Master Goldeen has been referenced in later generations when Pokémon are captured in a Master Ball, with Master Geodude during Platinum, Mistress Vullaby in Black, Mistress Tranquill in Black 2, Master Azelf in Omega Ruby, Mistress Absol in Colosseum and Mistress Poliwrath in XD.