You can battle the elite four at the pokemon leauge.
there is no ninth gym. after the eight gym is the Pokemon league.
its a normal type gym leader named lenora, gives out basic badge
Cheren
In Pokemon Red/Blue/Yellow and Pokemon FireRed/LeafGreen, the Celadon City Gym Badge is required to use Strength. Gym Leader Erika holds this badge.In Pokemon Gold/Silver/Crystal and Pokemon HeartGold/SoulSilver, the Goldenrod City Gym Badge is required to use Strength. Gym Leader Whitney holds this badge.In Pokemon Ruby/Sapphire/Emerald, the Lavaridge Town Gym Badge is required to use Strength. Gym Leader Flannery holds this badge.In Pokemon Diamond/Pearl/Platinum, the Canalave City Gym Badge is required to use Strength. Gym Leader Byron holds this badge.In Pokemon Black/White and Pokemon Black 2/White 2, Gym Badges are not required to use HMs.
You use your strong(est) Pokemon to kill the Gym Leader's Pokemon.
in the gym
there is no ninth gym. after the eight gym is the Pokemon league.
You cannot rebattle Gym Leader in Pokemon White.
He is in the lighthouse
You go on to defeat the eight gym leader.
The gym is in Blackthorn City.The gym leader is Clair.
You kill the Gym Leader's Pokemon with your Tepig.
He's a Gym Leader.
The eighth gym leader in Pokemon platinum is the one in sunny shore city.
sixth gym laeder
His Pokemon are: Vanillish,Cryogonal,And Beartic.
The Gym Leader Clay Uses Ground Types.