all you do is beat the Pokemon league then go down the stiares in your house whatch the t.v. and the t.v. will ask you question it will ask you what coler you like red or blue if you answerred you can catch latas if you answer blue you can catch latios
discover latios around the hoenn region then use mean look or block to prevent in from fleeing. you will probabley find latios next to fortree city. [you have to beat the elite four to find latios]
Anywhere in hoenn very rarely you can find shiny latios.
You have to find it somewhere in the Hoenn and use a masterball.
You can find Latias and latios anywhere in Hoenn. You just have to get lucky.
You can't get to Hoenn from Johto as far as I've been in the game but there are the two legendaries from Hoenn that appear in the Kanto Region, Latios and Latias after you defeat pretty much everything you can find them in any of the routes
He will give you one of the three Hoenn starters, and will also notify you of Latios' (Or LATIAS) arrival to the region.
You can't go to the Hoenn region in HG/SS.
Latias --> Southern Island (Nintendo Event only) Latios --> Roaming Hoenn
hoenn is the region Pokemon ruby, sapphire, and emerald take place in. if you bought one of those three games, you found the hoenn region.
Latias can be found roaming the Hoenn region after the defeat of the Pokemon League. Latias's counterpart Latios can be found on the Southern Island.
After you beat the E4 go downstairs, your mom will ask you about the colour of a Pokemon on TV. If you choose Blue you can find Latios roaming Hoenn.
Latias is anywhere in Hoenn, except for caves. You have to get ruby or emerald if you want Latios.