Go catch some other pokemons
Try catching Rayquaza.
You can't get Kyogre in Pokemon Ruby but you can get Kyogre in Pokemon emerald and sapphire and in ruby you only get groudon and rayquaza. In sapphire you get Kyogre and rayquaza and in emerald you can get groudon, Kyogre, and Rayquaza.
groudon,kyogre,rayquaza
You don't
In Pokemon Emerald, Groundon and Kyogre are legendary Pokemon. You can find them in the Marine Cave and the Terra Cave.
sootopolis city
Yes, you can!
kyogre rayquaza and groudon
Groudon, Kyogre, and Rayquaza. Groudon is the fire legendary pokemon, Kyogre is the water legendary pokemon, and Rayquaza is the air legendary pokemon.
no
You have to catch Kyogre and Groudon.
yes, Pokemon emerald.
Rayquaza is the mascot for Pokemon emerald which will be stronger than Groudon and Kyogre