There are eight gym leaders they are: Brock, Misty, Lt Surge, Erika, Koga, Sabrina, Blaine, and Giovanni.
You cannot rebattle Gym Leaders.
nope
No, unfortunately ;_; The only games that you can Re-Battle Gym Leaders on is Platinum, HeartGold, and SoulSilver
beat all the gym leaders
Beat the gym leaders. You get a new badge for every gym leader you defeat.
you need to beat the 8 gym leaders
The gym leaders have the badges all you need to do is defeat them.
9TH TRAINER!? Never heard before but if you talking about gym leaders there's no 9th gym leader
A hack of firered and leafgreen. A GBA game that has FAKE Pokemon in it and different gym leaders
travel around and defeat one of the gym leaders ............ i forgot which one.
There are Eight gym leaders in the Johto Region.
Brock, Misty, Lt Surge, Erika, koga, Sabrina, Blaine and Giovanni