Pokemon
¤ Red and Blue
¤ Red and Green (Japanese)
¤ Blue Version (Japanese)
¤ Yellow Version
¤ Gold and Silver
¤ Crystal Version
¤ Ruby and Sapphire
¤ Emerald Version
¤ FireRed & LeafGreen
¤ Diamond and Pearl
¤ Platinum Version

Universal Information
¤ What is this section?
¤ Breeding Pokemon
¤ Evolution Methods
¤ Elemental Types
¤ Pokerus Infection
¤ Shiny Pokemon

Affiliates
¤ Amity Square
¤ Dark Eon Hideout
¤ Eevee's Headquarters
¤ Eevee's Mansion
¤ Jenviousity
¤ Lugia's Island
¤ Perfect Absolution
¤ Pokemon Battle Dome
¤ Pokemon Inferno
¤ Pokeshore
¤ PokeTech
¤ Pokeuniverse
¤ Pokemon Valley
¤ Sapphire Milotic
¤ The Spriting Shack

Latios (Blue) can be found running around in Ruby Version and Latias (Red) can be found running around in Sapphire Version. Both Pokemon are at Level 40 know two unique moves other Pokemon don't know or can't learn: Luster Purge and Mist Ball. They also have a unique type combination, Psychic and Dragon. They are also the only legendary Pokemon to have genders, Latios being male and Latias being female.

Latias and Latios are like the Raikou, Entei, and Suicune of R/S. They will randomly jump from route to route and can be tracked when found.

The easiest way to catch either one is to use the Master Ball you receive from the Magma/Aqua hideout. However, if you were one of those foolish even to use it on Kyogre/Groudon, then you'll have to do it the hard way.

You're gonna need a Pokemon (or a few) with the ability 'Arena Trap', which prevents wild Pokemon from fleeing the battle. This Pokemon should be over Level 40 but not more than 55. This prevents Latias/Latios from fleeing. You'll have to weaken its HP to the red or orange zone and throw Ultra Balls like crazy until you are able to catch it successfully. However, if it manages to kill you, it will flee and you'll have to find it all over again. But this time, it will still have the same amount of HP as before.