The leader is Falnery, she uses fire type pokemon.
dark type
The 4th gym is found on Lavaridge town and the gym leader is Flannery.
The third gym leader in Pokemon Sapphire is Wattson and he is located in Mauville City.
In sapphire, the 5th gym leader is your dad, in that city after Oakdale.
The 8th Gym Leader in Pokémon Sapphire can be found in Sootopolis City.
In the Lavaridge Town gym.
You can with AR.
The 6th gym leader in Pokémon Sapphire is found at the Fortree Gym. The name of the gym leader here is Winona.
In the lavaridge town gym.
I believe that is after you've beaten the 4th Gym in Volcanoridge Town.
This gym uses mainly fire type Pokemon. In order to beat this gym you must use water type Pokemon lvl's 23 and up in order to defeat this gym leader.
the fourth gym its a fire gym