You can catch Latios in Pokémon HeartGold by having access to the Enigma Stone which was once available as a Wi-Fi distribution but is no longer available. You would have to take the Enigma Stone to the Museum in Pewter City and Steven Stone, the Hoenn Champion from Pokémon Ruby and Sapphire will be there and he'll take it from there and will later reveal that the Enigma Stone is actually an item that is called the Soul Dew. You will then exit the Museum and you'll come across a Latios that is ready to challenge you. Latios will be at Level 40.
Additionally you can migrate a Latios from a Pokémon Gameboy Advanced game such as Ruby, Sapphire, FireRed, LeafGreen or Emerald.
You cannot find Latios in Pokemon HeartGold unless you went on wi-fi and got the Enigma Stone
Yes, Mewtwo, Latios and Latias will be in HeartGold and SoulSilver.
There is latios and groudon.
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.
you can buy soulsilver and get it on there and trade it on to heartgold,get into the palpark or trade for it using wi-fi your best bet would be wi-fi
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.
The cool legendaries you can get in Soulsilver/heartgold are the following: Lugia, Ho-oh, Raikou, Entei, Suicune, Articuno, Moltres, Zapdos, Mewtwo, Latias, Latios (Latios in Soulsilver & Latias in Heartgold), Kyogre, Groudon, Rayquaza (Kyogre in Heartgold, Groudon in Soulsilver & Rayquaza if you have both).
Once you ask the Copycat in Saffron City to get her Clefairy Doll back Talk to the man inside The Pokemon Fan Club.Then he will give you the Clefairy Doll go outside.Then Steven Stone will talk to you he will say that Latias(HeartGold)or Latios(SoulSilver).Finally Latias or Latios will roam Johto or Kanto.But sorry,you can't get Latios without Cheating,Hacking or Trading. :(
Steven Stone is in Heartgold and Soulsilver because he tells you that Latias or Latios (depending on your version) is flying around and able to be caught.
In the new Pokemon HeartGold game, you can catch new Pokemon such as Beldum, Latios/Latias and you can choose between Treeko, Mudkip, or Torchic. (Can all be obtained through Pokemon League Champion Steven from the Hoenn Region.)
Latias is the main Pokemon in Heart Gold. Latios is the main Pokemon in Soul Silver. The only way to get the other Pokemon is to have the Enigma Stone. The distribution event is over so you have to ask a friend if they have it to give to you.