Well, you have to trade it over from Soul Silver, since the one you get in Heart Gold is Latias, but if you talk to Copycat, then go to the man in the Pokemon fan club, he will give you Copycat's lost doll, and when you exit, Stephen Stone will be there and tells you about a Pokemon the flies long distances which is Latias/ Latios depending on the game.
Latios is only in SoulSilver. You'll have to trade
you can't, but you can catch latios in ss and latias in hg hg(Heartgold) ss(Soulsilver)
There is latios and groudon.
You have to fight it until its weak then use a master ball
In the pewter city museum. to get his attantion you must bring walking latias ( heartgold) or latios ( soulsilver ) with a soul dew from a mystery gift. then he will take you to saffron city. he will talk to you for a while. then he will go back to pewter then show you latios ( heartgold ) or latias ( soulsilver ) outside of the museum. then after you defeat or catch one of eon Pokemon that's the last of him.
That depends on what you have done before. Nothing special happens after you catch rayquaza. If you haven't done it yet, you can catch Latios/Latias.
In Pokémon HeartGold, the Legendary Pokémon that you can catch in "HeartGold" are Articuno, Zapdos, Moltres, Mewtwo, Raikou, Entei, Suicune, Lugia, Ho-Oh, Latias, Latios, Kyogre and Rayquaza however you can only get Latios in "HeartGold" via the use of the Enigma Stone and in order to get Rayquaza, you also need to catch a Groudon that was caught in the Embedded Tower in Pokémon SoulSilver.
maybe you can find someone on the gts to trade for another legendary i can't because i still can't catch it.
Yes, Mewtwo, Latios and Latias will be in HeartGold and SoulSilver.
How do you catch latios in Pokemon sapphire
I don't think you can get Latios in Heartgold legitimately. I'm pretty sure you can only get Latios in Heartgold by using an action replay code, such as the Pokemon Modifier Code. You could also trade it over from Soulsilver, I think.
No...unless you defeated the Latios...