In mauvile city. It's just near the bike course.
he is in mauville city
marshtomp
'farfetch'd does not evolve' what? the third gym is in mauville. The leader is 'wattson' and he uses electric pokemon.
you build up your Pokemon higher than the gym leaders and the you kill the gym leaders Pokemon and as they all faint you will get a badge and you have to move on to nuger 4 gym leader
in mauville city
Fortree Gym leader
Go to Mawille(eletric gym town) and there will be a gym leader... there is no gym leader
The gym leader of Fortree City's gym...Specializes in flying type Pokemon
Go to Sootopolis.
Beat the gym leader
Water Gym Leader
Help me
juan