There are Eight gym leaders in the Johto Region.
Sorry, no. Only kanto and johto.
one of the johto gym leaders gives it to you.
That's never going to happen, since in Pokemon diamond and pearl there arent any gym leaders from johto and kanto you can battle. there is only one from johto jasmine and she only participates in pkmn contests. So if you want to beat all gym leaders from johto and kanto get a fire red and a crystal, lol or just create your own Pokemon game, XD!!
Well, I don't know what stage you are up to, but once you have beaten all 8 gym leaders in johto you have to battle the Pokemon league. Once you have won that, you then travel to the kanto region where you battle another 8 gym leaders. Beware, these gym leaders are a lot harder than the johto gym leaders. If you need any more help, just post a message on my message board.
you start out in the johto region if you mean kanto you have to beat all the gym leaders and the elite 4
Falkner, Bugsy, Whitney, Morty, Jasmine, Pryce, and Clair.
u have to beat all johto gym leaders
You have to beat all the Johto gym leaders.
Professor Elm will give it to you after you defeat the 8 gym leaders of Johto.
You have to search Johto and Kanto and find all the gym leaders out side of there gyms and and then talk to them and they will eventually give you their numbers
you simply defeat the gym leaders in the johto and kanto regions
you need to beat all the gym leaders johto and kanto