I believe the pokemon would be wailmer, but the problem is, so I've heard, you can't catch wailmers in heartgold. I do have the game, but I have never looked for a wailmer. I hope this helps you.
P.S. : I think the only way you could get one was by trading from a different game.
you can get it by getting a pichichu in pearl trade it to heartgold
u have Kurt make it (in azalea)
Aura Beam is in Pokemon HeartGold.
That is impossible in Pokemon HeartGold and SoulSilver.
No, you cannot sell eggs in Pokemon HeartGold.
The gs ball.
You can't.
you dont
probaby kyogre
I think that TM energy ball doesn't exist in heartgold. You can find it in Pokemon diamond and pearl on ds.
no
yes u can in all pokemon games
You cannot get a GS Ball from an Apricorn.
The only way to get a Premier Ball in HeartGold or SoulSilver Versions is to trade a Pokemon holding one or by buying 10 or more Poke Balls at a PokeMart.
you can only get cherish balls on event Pokemon they are not obtainable
You cant
You can obtain the TM Shadow Ball when you defeat Morty in Ecruteak.