easy answer.... you dont! sure you beat all 8 gyms, you beat the elite 4, your rival/champion, complete the pokedex, visit the sevii islands, complete the national dex, catch all the legendary pokemon, and beat every trainer, your still not done... THATS JUST THE BEAUTY OF POKEMON :]
beat the Pokemon league
No its not an HM in leafgreen.
Catch all the Pokemon. credits are rolled if you beat the Pokemon league
nnnnnnnnnnnnnnoooooooooooooooooooooooooo
go sell it at gamestop
Whatever you want.
Use level 60 pokemon!
beat a trainer and search the Pokemon up in your Pokedex
beat the Pokemon league.
beat the gym leader
train your Pokemon that's it.
i guess nothing