they are in different spots in every game, and not all of them are in a game, but they are usually hard to find like:ho-oh (bell tower), Lugia (whirl islands), mewtwo (seafoam islands- in FireRed and LeafGreen), and many more, but there is only one Pokemon that can be received only in Nintendo events. That Pokemon is...
CELEBI
Ho-oh
Riakou
Entei
Suicune
Articune
Zapdos
Moltres
Kyogre
Mew-two
Raquaza is when you get both Groudon (SoulSilver) an Kyogre (Heartgold) to Emmended Tower.
(Dialgia,
Palkia, and
Giratina is only with the special event Arceus)
Latios is only when you bring the Eginema Stone to Saffron City, then the fossil museum
Latias
Some conditions apply for these Pokemon I think. And I have heard people talking about an event happening for Celebi.
you get ho oh in heart gold and in soul silver you get lugia. You can still get Lugia in heart gold too, somewhere in the whirl islands, mewtwo, in the cerulean cave, zapdos, in the power plant, moltres, in Mt. Mortar, articuno, in the seafoam islands, kyogre, in a cave near thr safari zone, and dakrai, celebi, and jarachi but i have no idea how to get them! sorry! :)
Lugia
Ho-oh
Suicune
Entei
Raikou
Zapdos
Articuno
Moltres
Kyogre
Mewtwo
Ho oh=Bell tower Lugia=Whirl islands Suicune=Route 25 Raikou/Entei=Jhoto Zapdos=Power Plant Artoocuino (I dont know how to spell his name) Moltreres=Mt.Silver Latias/Latios=Kanto/Pewter city at event Kyogre/Groudon/Raqqazza=The tower at the cliff in jhoto(I forgot its name sorry) Mewtwo=Cerulean cave
You can get these Pokemon in HeartGold.
Raikou, Suicune, Entei, Lugia Ho-oh, Celebi (Event Pokemon), Latias, Kyogre, Rayquaza, Moltres, Articuno, Zapdos, and Mewtwo. I believe that's all you can get through most of the game play.
you go to burning tower 3 legendary dogs are there and after you talk with them you can see there faces on pokewalker map.
The legendary Pokemon are:
Ho-Oh
Lugia
Mewtwo
Entei
Raikou
Suicune
Kyogre
Rayquaza
Latias
ho-oh,Lugia,Mewtwo,Entei ,sicune and raikou
Tyfloshin
That is impossible in Pokemon HeartGold and SoulSilver.
Aura Beam is in Pokemon HeartGold.
No, you cannot sell eggs in Pokemon HeartGold.
You need to mate the Pokemon with a Ditto.
yes at supercheats.com/pokemon heartgold action replay codes
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold
no it dose not evolve no lengendey evolve
where is the pokemon transfer lab in heartgold
No, but you can trade Pokemon only in HeartGold to Black
Aura Beam is in Pokemon HeartGold.
That is impossible in Pokemon HeartGold and SoulSilver.
Technically,yes you can get Arceus in Pokemon Heartgold,but only by trading it to your Pokemon Heartgold game from Pokemon diamond,pearl or platinum.
No, there are no underwater routes in Pokemon HeartGold or SoulSilver. The HM Dive is not available in Pokemon HeartGold or SoulSilver.
no, but use can use poketransfer from heartgold to white
Pokemon HeartGold can communicate with all the DS Pokemon games. :c)