Ledyba, Ledian, Meowth, Persian, Teddiursa, Ursaring, Deliberd, Skarmory, Vulpix, Ninetales, Kabuto, Kabutops, Mawile, Gulpin, Swalot, Lileep, Cradily, Groudon.
Victini is unobtainable in Pokemon HeartGold.
Mew, as in basically all other games, is unobtainable except for action replay
Darkari is unobtainable in heartgold and soulsilver, only to get it is to trade from pearl, diamond, or platinum.
Serebii is Japanese for the Pokemon Celebi. You must have the Mystery Gift event for it. It was available at 2010. It is now unobtainable at this moment. You have to have the Action Replay for Celebi. Hope this helped!
the Pokemon unobtainable are surskit, masquerain, zangoose, lunatone and Roselia
You need to trade one over from Diamond, Pearl, or Platinum.In those games it's unlocked by an event.You can't. It's unobtainable.
Heatran is unobtainable (and therefore does not exist) in PoKéMoN HeartGold & SoulSilver, so you'll need to trade it from PoKéMoN Diamond, Pearl or Platinum.
the Unobtainable Pokemon in RSEFRLG are Celebi, Mew, Jirachi, Deoxys, and 000 (Missingno. ( DO NOT ATTEMPT TO CATCH))
You can trade a Pokemon with the move dive from Pokemon Emerald, Ruby or Sapphire to HeartGold and SoulSilver and it will work.You can't, it's unobtainable.Dive is unobtainable in Pokemon Heart Gold Version and Pokemon Soul Silver Version as either a TM or HM. quote it is obtainable and to get it u need to go to the house near the battle frontier there be three dudes and one can teach u dive
Nowhere! Unobtainable
Unobtainable unless traded many times from gameboy to advavced to ds
The 151st Pokemon is Mew and is unobtainable in Pokemon Platinum.