It isn't in HG nor SS. It is probably in another version.
In the cliff cave in cianwood city
Here are the places you may find a wild kingler in HeartGold. Go to route 34, 40, Cherrygrove City,Cianwood City, Cliff Cave, olivine City, Union Cave,or on Whirl Islands.If you can't find a kingler, get a krabby and evolve it.
What? The under is only found in Pokemon Colosseum? Can you say what city it is in heartgold.
There is no saffron city.
in polysyllabic city
In veridian city
Cianwood City
In Goldenrod city
It is in blackthorn city
The Lighthouse is in Olivine City.
in goldenrod city
in blackthorn city