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!!
Defeat all of the johto gym leaders. Defeat or cacth ho ho. Defeat all of the kiomono girls. Defeat the eltie four. Get the ss aqua ticket then go to Olvine city.
Defeat all 8 gym leaders in Johto when you have done this go to pallte twona dn surf across the water and you will find your self in Kanto go defeat the elite 4 when you have done this you will end up back in New Bark Town you will then get a call from Prof. elm he will tell you to board a ship and this ship will take you to Kanto. complete all the Gyms in Kanto to get all the Other Gym Badges. oh and by the way when it comes to defeating Blain (the Kanto fire Gym leader) you will need to surf to a small island near Cinibar to defeat him. good luck
Defeat all gym leaders in jounto and kanto then deafeat red and you can get another starter pokemon
After you defeat all 16 gym leaders, you can call them to arrange a rematch through pokegear in fighting dojo in saffron city(kanto). See related link below to get gym leaders phone numbers and when to call them.
Mainly Johto, but after you beat the Pokemon League you can go to the Kanto.
defeat all the gym leaders in johto and kanto hope this helps
Defeat all 16 Gym Leaders in both Kanto and Johto. If you want a more detailed explanation of how to defeat the gym leaders, go to Seribii.net.
After you defeat all 8 Gym Leaders and get all the badges, you have to go and beat the Elite Four. When you're finished with the Elite Four, you have to defeat the Johto League Master. Once YOU are the Johto master, Professor Elm will give you a ticket for the S.S. Aqua which can be located in Olivine City. Then, you will be taken to Kanto where you can defeat all 8 of the Kanto Gym Leaders. In the end, you get a chance to REBATTLE all 16 Gym Leaders! I know it's a lot but...
Get all gym badges of Johto and defeat the Pokemon league. Then you have access to the Kanto Region.
It's close to victory road. Defeat all kanto and johto gym leaders. The police girl will let u go there.
Once you defeat the all the Gym leaders from Johto and Kanto and the Elite Four go to Prof. Oak in Pallet Town and he will give you one of the Kanto starters.
You have to defeat all of the gym leaders.
To get all 16 badges in Pokémon Gold you need to first beat the 8 Gym Leaders of the Johto region and then defeat the Elite Four and the Champion of the Johto region in order to become its Champion and unlock the Kanto region and then in order to get the remaining 8 badges you will need to beat the 8 Gym Leaders of the Kanto region.
you start out in the johto region if you mean kanto you have to beat all the gym leaders and the elite 4
to beat blue you need to defeat all kanto gym leaders then go to cinanwood he will be there
you need to beat all the gym leaders johto and kanto
The Kanto starters are obtained after collecting all 16 badges and defeating Redyou gotta beat both Pokemon regions gyms and elite four all 16 gyms and all 8 elite four members then go to Prof. Elm and Prof. Oak for the johto and hoenn startersYes, but you need to defeat all the gym leaders in both johto and kanto, and you have defeat Red.Once you finish that go too Professor Oak in his Lab and you get too pick a Kanto starter