You can get a diploma!
You can also get a johto starter: totodile chikorita or cyndaquil. Choose wiseley.
Truthfully, I only know one, chicorita. You get it by completing the hoenn pokedex.
Whatever you want you can try the battle frontier train your Pokemon etc.
You only need to get all hoenn Pokemon to get johto starter It's a pain! :(
You get one Johto starter in Emerald for completing the Hoenn Pokedex. You can trade them into FireRed. Unfortunately, Croconaws (along with Totodiles) cannot be caught in Pokemon FireRed. You must have one traded to you from Emerald.
Just a certificate saying that you completed the pokedex.
In the pokedex, spoink.
420
Wynaut.
in the pokedex
U Will Need Gameshark Codes To Complete The Pokedex In Pokemon Emerald.
To complete hoenn pokedex you do not need JIRACHI & DEOXYS at all.you can't get all Pokemon on Pokemon emerald so TRADE or CHEAT !!
In the both the Hoenn and national pokedex, Pokemon number 367 is Huntail.