Pokémon Emerald Gym Leaders & Elite Four

Use Water, Grass, or Fighting types. Mudkip trivializes this gym. If you picked Torchic, catch a Lotad or Wingull early. Watch out: Nosepass has Rock Tomb which lowers Speed.

Use Flying or Psychic types. Taillow or Wingull are your best options. Danger: Makuhita has Bulk Up — do NOT let it set up more than once or it will sweep your team.

Use Ground types — they are completely immune to Electric. Marshtomp or Geodude make this gym free. Danger: Voltorb knows Selfdestruct and WILL use it. Do NOT leave a low-HP Pokémon in against it. Magneton is Electric/Steel so Ground is 4× effective.

Use Water or Ground types. Marshtomp is the MVP here — Water + Ground hits everything super effectively. Danger: Torkoal's Overheat hits incredibly hard on the first use, but lowers its Sp.Atk afterward. Survive the first Overheat and you win. Numel and Camerupt are 4× weak to Water.

Use Fighting types. Hariyama or Machoke are ideal. THE HARDEST GYM IN EMERALD. Slaking has enormous Attack and knows Facade. Do NOT burn or paralyze it — Facade doubles in power with status conditions. Exploit Slaking's Truant ability: it loafs every other turn. Use Protect on its attack turns, then hit hard on its Truant turns.

Use Electric, Ice, or Rock types. This is a diverse team — no single type beats everything. Danger: Altaria knows Dragon Dance. If it sets up even once, it can sweep your entire team. Prioritize taking Altaria down fast with Ice moves. Skarmory is very bulky physically — use Special attacks.

This is a Double Battle. Use Dark, Water, or Ghost types. Sharpedo with Crunch is excellent. Danger: Claydol has Earthquake which hits both your Pokémon AND its ally — position carefully. Solrock and Lunatone can use Cosmic Power to become very tanky. Take them down fast before they set up.

Use Grass or Electric types. Major Danger: Kingdra has Water/Dragon typing, meaning its only weakness is Dragon. It also knows Rest to heal. This is one of the toughest fights in Emerald. Whiscash is 4× weak to Grass. Bring a Pokémon with Toxic for Kingdra if you lack Dragon moves.

Use Fighting or Bug types. Most of Sidney's team is frail. Hariyama with Brick Break can sweep. Cacturne and Shiftry are 4× weak to Bug.

Use Dark types. Normal and Fighting moves do NOT work on Ghosts. A Pokémon with Shadow Ball or Crunch is essential. Danger: Dusclops are very bulky and know Confuse Ray + Pressure. Sableye in Gen 3 has NO weaknesses (Fairy type didn't exist yet).

Use Fighting, Electric, or Rock types. Don't rely solely on Grass — Ice hits Grass super effectively. Danger: Walrein is extremely bulky with Ice Body. Bring Electric types for the Sealeo/Walrein Water combo.

Use Ice — it's the key to this fight. Ice Beam on a fast Pokémon (Starmie, Walrein) can sweep most of Drake's team. Danger: Salamence is the biggest threat in the entire Elite Four. Level 55 with Dragon Claw, Flamethrower, Crunch, and Rock Slide. It WILL kill something if you don't have a solid Ice answer.

No single type beats Wallace's team. You need Electric for most + Grass for Whiscash (4× weak). Biggest Danger: Milotic is extremely bulky, knows Recover, and has Ice Beam to kill Grass types. Bring Toxic or a strong Electric move. Ludicolo resists both Water and Electric — use Poison, Flying, or Bug moves. Gyarados is 4× weak to Electric.