i know that you catch ho-oh on the top of bell tower (which is a huge pain to get up and that is why i used my master ball on ho-oh :P) entei and raikou are caught in the jhoto region (you just need to follow the poke'gear map, they move constantly) , but suicune is caught (i think i haven't caught it yet) in the kanto after you beat the elite four. the last time i saw suicune was when i first entered kanto sooo...
you cant catch persian in heartgold.... i think
you need a silver wing
You should catch him,he has a lot of HP and he's also stong.
If you are trying to catch ditto in heartgold and soulsilver, I found the easiest way is to catch it outside of the daycare, just south of goldenrod city. It might take about five or six goes, but you will find him. I suggest using a quick ball. Good luck!
You can get a Larvitar from Mt. Silver or from the Safari Zone (Mountain) with 5 Peak Objects.
No, you can't get all of the Legendaries in Pokémon HeartGold although you could trade all of the Legendaries in.
You can try and complete your pokedex, as well as find and catch all the different legendaries.
the legendaries that are automatically in the game without events are as follows...HGenteiraikousuicuneho-ohlugiamewtwoarticunozapdosmoltresand kyogreSSenteiraikousuicunelugiaho-ohmewtwoarticunozapdosmoltresand groudon
go to this page http://www.serebii.net/diamondpearl/legendaries.shtml this page has all the legendaries you can normally catch in in Pokemon diamond/pearl all other legendaries you have to transfer from a 3rd generation game
You catch them all....
I'm afraid you can't it isn't one of the legendaries in pkmn heartgold...
If you mean with the 3 legendaries, the legendary bird pokémon Articuno, Zapdos and Moltres: you can't catch them in Diamond. You can migrate or trade them, since they will be roaming Sinnoh in Platinum. You can also find them in FireRed/LeafGreen, HeartGold/SoulSilver and X/Y.
probably the legendaries"in my opinion btw"
well after that you have technically finished the game to you can do what you want. When I finished it I caught all the legendaries.
Not without trading from other games. In heartgold you can get ho-oh, lugia, mewto, kyogre, and possibly celebi and jirachi through event. Others can be obtained through trading or other means. It is possible to have all legendaries on one heartgold cartridge, though, if you trade from other game. You need platinum, and emerald, and firered or leafgreen.
g;r;g;g
catch all the legendaries. when u done that catch all the Pokemon in national dex. when u done that...... get platinum.