In the league.
Cynthia is not the champion in the johto region in Pokemon heartgold,you can't find her in it, but she is the champion in Pokemon pearl,diamond, and platinum versin and that is the sinnoh region.
Her full name is Cynthia Roran Kale
You then have to beat Cynthia
In Pokemon Diamond, Pearl, and Platinum,(for the nintedo DS) Cynthia's grandmother can be found in celestic town, which is located on next to mount cornet (it should be on your map). I believe that her grand mother is also the elder of the town if that helps you.
Cynthia Has A Happiny Go And Talk To Her?? wrong. Cynthia gives you a happiny egg in pearl and diamond. in platinum, it is togepi
of course the Pokemon league
Cynthia is not the champion in the johto region in Pokemon heartgold,you can't find her in it, but she is the champion in Pokemon pearl,diamond, and platinum versin and that is the sinnoh region.
from Cynthia
she is in the pokemon league
I think you can get it off cynthia, or she tells you where you can buy it or something like that.
Past the elite four.
You can find a picture of Dialga in Pokemon Pearl by going up to Cynthia's grandmother's house and talking to her grandmother. If that doesn't work, look in the book that's on their big table.
Without trading or cheating, you can't. But after you beat the elite four, go talk to Cynthia's grandmother and she will show you Palkia (diamond) or dialga (pearl) for your pokedex.
Cynthia
Her full name is Cynthia Roran Kale
Cynthia is the Champion so you will see her when you beat the Elite Four
you go to the pearl harbor ship and take a right....