Pokémon Ruby and Sapphire/Dewford Town

Dewford is a small seaside town on a small island accessible only through two water routes. Before getting Surf you can only go here by asking Mr. Briney to take you here on his boat. Just north of Dewford is ../Granite Cave/. This town doesn't have a Poké Mart, so you'll want to stock up on items before you come here.

In the house north of the ship dock, talk to the person; he will give you a Silk Scarf. The person to the east of the gym will give you an Old Rod. The northernmost building in town is the Dewford Hall, where residents discuss the latest trends in Hoenn. Inside, a man will give you TM36 Sludge Bomb once you have earned five Gym Badges.

Dewford Gym

 * Gym Leader: Brawly
 * Badge: Knuckle Badge

When you enter this gym, it will be pitch black. As you beat more of the trainers in this gym, the illuminated area around you will expand.

This Gym's speciality is Fighting Pokémon. It's weak to Psychic and Flying moves, though some trainers have a Meditite to negate this weakness. Any Flying type or Psychic type would do. Avoid Normal, Rock and Dark types. If you have a, it would have learned the Flying move Peck before evolving; this move will be useful here. Surprisingly, both of Wurmple's final evolutions are effective here, as they are Bug type which resist fighting moves while they both learn Gust, a Flying Type move, at level 13, which is the ideal level to challenge this gym.

Brawly in Ruby and Sapphire
Most of the danger you'll face from Brawly is from one move: TM39. It raises the DEF and ATK stats of its user by one level, which, combined with his Pokémon's naturally high ATK stats and high-power physical moves (for example, Arm Thrust), can easily make it so that he OHKOs you. Luckily, like the rest of the gym, his Pokémon are weak to psychic and flying type moves, so catching Pokémon like, , or beforehand should make the battle easy.

Brawly in Emerald
In Emerald, Brawly gains a third Pokémon to his team in the form of. It's Fighting and Psychic type, so the best way to defeat it is with a Flying type move.

Defeat Brawly and he'll award you with the Knuckle Badge, which makes any Pokémon up to level 30 obey you and lets you use HM05 outside of battle. You also get TM08, which is a great move to teach to physically oriented Pokémon such as Fighting and Flying types.

After the Gym
Once you're done with the gym, there's not much else to do but head out to ../Granite Cave/ to deliver the letter to Steven if you haven't done so. If you did, talk to Mr. Briney to go to your next destination: ../Slateport City/.

Items

 * Silk Scarf - obtained from the Ace Trainer in the house directly north of the dock
 * Old Rod - from the fisherman near the gym
 * TM36 Sludge Bomb - from a man inside Dewford Hall after you get five badges
 * Stardust - found on the eastmost rock close to the water outside Granite Cave (Hidden)
 * Poké Ball - at the very end of the sand path behind the cave (Hidden)
 * Heart Scale - in a northeast tile of the beach next to the water (Hidden)