It ultimitly depends on the version. In Platinum, you can go to the resorts after beating the Elite Four. Cynthia is there, too. In the soon-to-be-realeased games, Black & White, you can battle her. In HeartGold & SoulSilver, she appeared during the Arceus Event (if you downloaded it, which you appearently hadn't). We all know that in the Kanto games, Givonni (a.k.a leader of Team Rocket) was the eighth gym leader. Volkner was thinking about going for the Leage challenge, so he might have gone there eventally. Of course, these are only theories, so we may never know for sure.
They are every where you juxt have to go to www. gym fun.com that is a website for all gym leaders bitchs
Defeat ALL of the gym leaders in the Sinnoh Region and get ALL the Gym Badges and you can go and battle the Pokemon League. Hope I Helped! Defeat ALL of the gym leaders in the Sinnoh Region and get ALL the Gym Badges and you can go and battle the Pokemon League. Hope I Helped! Defeat ALL of the gym leaders in the Sinnoh Region and get ALL the Gym Badges and you can go and battle the Pokemon League. Hope I Helped! Defeat ALL of the gym leaders in the Sinnoh Region and get ALL the Gym Badges and you can go and battle the Pokemon League. Hope I Helped!
If you beat all the gym leaders then you can try to beat the Elite Four, or you could go get the National Pokedex. (If you've beaten all the gym leaders, your doing pretty good!)
beat all 7 gym leaders and go to viridayan city gym
You go to all the cities and defeat their gym leaders, if the city has a gym
To find blue defeat all of the gym leaders and then go to cinnabar island blue will be there and will accept your challenge if you have defeated all of the gym leaders. Then go to viridian city gym and get through all of the trainers. After this you can also battle red.
go into the gym
Well the gym leader is Gary but in the game he's called Blue. All you need to do is beat all gym leaders in johto the beat the Pokemon league the you beat all the kanto gym leaders the you go to cinnaber island you will find Gary/Blue speak to him then he will go to viridinian city then go to the viridinian gym and he will be there.
Go to serebii.net and click on heartgold/soulsilver. click on gym leaders.
there are no 20 gym leaders
you have to go to every gym in kanto a beat all the gym leaders
to beat blue you need to defeat all kanto gym leaders then go to cinanwood he will be there