first, talk to the dude that tells you what type the gym leaders favorite type and what type they are going to use. next,find what could beat that type. now, train your Pokemon to a good lv.
warning!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(this may be used on any gym leader)this will not all ways work but it works for me!!!!!it may be hard to find what beats that gym leader, but look real good (p.s. if you can get your Pokemon to a lv. 100)!There are several types you can use to your advantage like Rock and Steel (For defense) and fighting (for offense). Generally you have to use special attacks and its a good idea to have pokemon with good defense.
Train the Castform which you got from Weather institute to learn Icy wind and other Ice move, it will KO Winona and her Altaria, or find a Rock type pokemon.
you battle her
Gym 5 is located in Safaron City, and the Gym Leader is Sabrina. She uses Psychic type Pokemon, and it's a bit of a puzzel to get to her.
saffron city (psychic type gym leader)
in the vedirian gym
Simply go inside.
in hearthome city
petalburg gym
its the petalburg gym and/or gym 5.
beat him with your pokemon!
simply go back to petalburg where your father is gym leader and you must challenge him
after you beat 4 to 5 gym leaders you can face him
roxanne, brawly, wattson, flannery, norman.
you u go to the 6th gym leader and u beat him.....isnt that kind of obvious??? only a buttox wudnt know that......
I recommend the use of a Dark or Psychic Pokemon or a Pokemon with those moves.
beat the 1st 4 gym leaders and get to the next city
At Dewford town-Go up and go in the cave there will be a hiker and he gives to you if you beat the 2nd gym
Go beat the 6th gym leader ^^, that is in Fortree City.
Head outside of the city to the route with the strongest wild Pokemon and train up your Pokemon until they are 5 to 10 levels higher than the gym trainers.