you have to go to Battle frontier and battle the Trainers eventually you will get the leader
just to warn you in the pike the battle pike queen has these Pokemon
Dusklops lv whatever levelyour Pokemon is the same as your foe
Seviper lv same as your Pokemon
Milotic lv same as you Pokemon
the lv will be the same as you highest lv ed Pokemon
You have to beat the challenge a certain amount of times.
beat all battle frontier leaders
The Leaders Pokemon are level 100 as well as the Pokemon you are given In the battle frontier (Ruby,Emerald,Saphire)
emerald due to its extra content like Pokemon contests and rematching gym leaders plus the battle frontier is included though firered has things like the islands and better elite four so im going with emerald.
dont no can someone tell me
Water.
No, but you can challenge kanto gyms
...you beat the gym leaders
you cant.
... No
No. But, you can fight them (as gym leaders) In Pokemon Silver/Gold.
I don't think you can re challenge a gym leader you have already beaten in Pokemon white.