Brawly on Dewford Island. He uses fighting type.
Pokemon ruby where is the 6 gym
beat the 2nd gym and go in the cave
petalburg gym
its the petalburg gym and/or gym 5.
Simply use a flying type Pokemon like taillow on his fighting type Pokemon.
journey again to achieve the another battle called the 8th gym Pokemon ruby
In the 8th gym. he is the gym leader
Wattson the electric gym.
Brawly is a fighting type and he is located in Dewford Town and he has a machop and makuhita
The town in which the third gym is in on Pokemon ruby is in Mauville City (or town, I don't know which one)
In Pokemon Sapphire, Ruby and Emerald the 7th Gym that's located in Mossdeep City has Psychic type Pokemon.
The Fourth Gym is in Lavaridge City.