The Prime Cup is the ultimate cup of the game. This cup has no restrictions on Pokémon you can use and has all the opponents at Level 100. This means that, if you want to use your own Pokémon, they have to be completely fully trained. The enemies you will face are strong, with many having some strong legendary Pokémon.
Like the PokéCup, there are four divisions in which you are to battle. Each with 8 different trainers. Defeat the 8 trainers and you can progress to the next division. There is also a special perk if you complete Prime Cup's Master Ball in Round 2 with a Pikachu in your team. You get to teach it Surf.
GameBoy Usable: Yes
Allow Same Pokémon: No
Sleep Clause (No more than 2 Pokémon Asleep): Yes
Freeze Clause (No more than 2 Pokémon Frozen): Yes
Self KnockOut Clause (Final Pokémon fainting at the same time as opponent equals loss): Yes
Earn a continue by defeating the opponent without losing a Pokémon