How do I change Deoxys’s form (RSE)?

Question

RSE. For some reason my hacked ones are all Deoxys-S

Answer 1

In Generation III, its Forme depends on which game cartridge it is on and cannot be changed without trading.
Normal Forme is the default in Pokémon Ruby and Sapphire and Pokémon Colosseum and XD.
Attack Forme is the default in Pokémon FireRed.
Defense Forme is the default in Pokémon LeafGreen.
Speed Forme is the default in Pokémon Emerald.

source

Comments

Oh that’s why. I’m playing emerald.