I heard a rumor that you can get a Dark-Ghost type in Pokemon Heart Gold...?

[colton]

If it is true what pokemon do I have to use to chain breed?
Any tips or advise would also be niceDD

 

[Fatefinger]

Sableye and spiritomb.

 

[FaustLim]

The pokemon you are talking about is sableye which is only available in heartgold, spirtomb the only other dark ghost type pokemon has to be transferred from pokewalker
use a female sableye and a male pokemon from the human like egg group like machamp, toxicroak, electivire, etc and place them in the daycare

http://bulbapedia.bulbagarden.net/wiki/Human-Like_(egg_group)