You cannot catch it in the wild. However, after you get the national dex, you can tranfer one from heartgold/soulsilver using the pokemon transfer system located near white forest (You can trade from D/P/P but you cannot catch latios/latias in D/P/P. You can in HG/SS).
the movie latios and latias come out on is in Pokemon heros the 5th movie
No, neither Latias nor Latios are breedable.
No, there is no 2nd movie that features Latias and Latios.
in southern island there was latias and latios you will meet latias in Pokemon sapphire and latios in Pokemon ruby
its latios and latias
No, you can only get Latias in Sapphire and Emerald and Latios in Ruby and Emerald.
Latias and Latios are both from the eon species and they are both psychic/dragon types.
In Pokemon Sapphire, Latios can be found in Southern Island.
no you cannot but you can battle latias/latios
there is no way to capture latias and latios in Pokemon pearl except if you migrate them from other Generation 3.
Latios isn't in Pokémon Sapphire, but Latias is. Latias is in Pokémon Ruby! However, you can trade Latios from Pokémon Ruby to get it.
Yes, Mewtwo, Latios and Latias will be in HeartGold and SoulSilver.