Mewtwo can be found in the Cerulean Cave in HeartGold.
Mt.Moon
Mew cannot be caught in HeartGold. Mew cannot be caught in SoulSilver, either. The only two ways you can get Mew are by trading for it or by getting one through a Nintendo event. It will be easier if you trade for one.
You catch Mew-Two
You cannot find Mew in HeartGold or SoulSilver. The only way to get Mew is to trade it from another game, or to use PalPark.
after you get all 18 badges and defeat the Pokemon league go to cerulian cav and mew two will be there
To get a Mew in Pokemon Heartgold, you could do it through a Nintendo Wi-Fi event.
Yes you can if you have Mew in your Pokemon SoulSilver/HeartGold You can put Mew in the Pokewalker.
You cannot get a Mew. Mew is a Pokemon only obtainable by events. Since there were no Mew events for HeartGold or SoulSilver, you cannot get one for your game. However, you can get a mewtwo in Cerulean cave after completing the game.
you don't
No, you cannot currently get Mew at Gamestop stores for Pokémon HeartGold or SoulSilver.
you cant for heartgold or soulsilver suckers
Yes. You must go to the Cerulean Cave and interact with the Mewtwo inside.