Competitive Information for Meganium [Ruby/Sapphire]
Grass
Abilities:
At 1/3 or less of its max HP, this Pokemon's Grass-type attacks have 1.5x power.

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Movesets for Singles
Looking for a competitive moveset for Meganium? These builds are optimized for Ruby/Sapphire Single Battles. The movesets and EVs are designed to maximize damage against common opponents and threats in the Ruby/Sapphire metagame. Check out the expert movesets below to boost your battle performance and dominate your opponents!
Say hello to Meganium, a superb Pokémon that excels with Grass typing! Meganium is a common Pokémon to see in the RS metagame. It is weak to Bug, Fire, Flying, Ice, and Poison-typed attacks. Delve into Meganium's movesets below and strategize for victory!
Item: Shell Bell / Choice Band
Ability: Overgrow
Nature: Adamant (+Atk, -SpA)
EVs: 4 Hp / 252 Atk / 252 Spe
Moveset:
- Double-Edge / Return
- Earthquake / Mud-Slap
- Ancient Power
- Rock Smash / Counter
Meganium shows a brilliant Physical Sweeper prowess in single battles. This moveset is designed to overwhelm foes with forceful physical moves. In the dark days before Generation IV, a move's damage category was determined by its type. Choice Band will increase the damage of Meganium's physical moves by 1.5x at the cost of locking you into the first move you pick. The Shell Bell item option is to help Meganium recover from the recoil damage it may take from Double-Edge. With Overgrow, at 1/3 or less of its max hp Meganium's grass-type attacks have 1.5x power.
◆ Return is a physical 0-base power Normal-type move (max 102 power at maximum happiness).
◆ Earthquake is a physical 100-base power Ground-type move (hits adjacent pokemon. Power doubles on dig).
◆ Mud-Slap is a physical 20-base power Ground-type move (100% chance to lower the target's accuracy by 1 stage).
◆ Ancient Power is a physical 60-base power Rock-type move (10% chance to raise all stats by 1 stage (not acc/eva)).
◆ Rock Smash is a physical 20-base power Fighting-type move (50% chance to lower the target's defense by 1 stage).
◆ Counter is a physical 0-base power Fighting-type move (if hit by physical attack, returns double damage).
Link (click to copy):
https://hohoushome.com/b/caa9a
Item: Miracle Seed
Ability: Overgrow
Nature: Modest (+SpA, -Atk)
EVs: 4 Hp / 252 SpA / 252 Spe
IVs: 0 Atk
Moveset:
- Razor Leaf / Frenzy Plant
- Synthesis
- Toxic
- Light Screen
In single battles, Meganium is known as a brilliant Special Sweeper. This approach seeks to crush rivals using destructive special moves. Keep in mind back before Generation IV, a move's damage category was determined by its type. With Overgrow, at 1/3 or less of its max hp Meganium's grass-type attacks have 1.5x power. With a Miracle Seed equipped to it, Meganium's grass-type attacks have 1.1x power.
◆ Frenzy Plant is a special STAB-boosted 150-base power Grass-type move (Meganium cannot move next turn).
◆ Synthesis is a status move (heals your Meganium by a weather-dependent amount).
◆ Toxic is a status move (badly poisons the target).
◆ Light Screen is a status move (for 5 turns, special damage to allies is halved).
Link (click to copy):
https://hohoushome.com/b/cba9a
Movesets for Doubles
Need a strong doubles moveset for Meganium? These builds are perfect for VGC (Pokémon Video Game Championship) and other competitive Ruby/Sapphire Double Battles. The VGC is the ultimate test of strategy and skill, and these movesets and EVs are designed to excel against multiple opponents at once while providing essential support to your team. Dominate the Ruby/Sapphire metagame with these expert-crafted setups!
Item: Shell Bell / Choice Band
Ability: Overgrow
Nature: Adamant (+Atk, -SpA)
EVs: 4 Hp / 252 Atk / 252 Spe
Moveset:
- Earthquake / Mud-Slap
- Double-Edge / Return
- Ancient Power
- Rock Smash / Counter
Ready for double battles? Meganium is an extraordinary Physical Sweeper. This approach seeks to overwhelm foes with heavy-hitting physical moves. In the old days prior to Generation IV, a move's damage category was determined by its type. Choice Band will increase the damage of Meganium's physical moves by 1.5x at the cost of locking you into the first move you pick. The Shell Bell item option is to help Meganium recover from the recoil damage it may take from Double-Edge. With Overgrow, at 1/3 or less of its max hp Meganium's grass-type attacks have 1.5x power.
◆ Mud-Slap is a physical 20-base power Ground-type move (100% chance to lower the target's accuracy by 1 stage).
◆ Double-Edge is a physical 120-base power Normal-type move (has 1/3 recoil).
◆ Return is a physical 0-base power Normal-type move (max 102 power at maximum happiness).
◆ Ancient Power is a physical 60-base power Rock-type move (10% chance to raise all stats by 1 stage (not acc/eva)).
◆ Rock Smash is a physical 20-base power Fighting-type move (50% chance to lower the target's defense by 1 stage).
◆ Counter is a physical 0-base power Fighting-type move (if hit by physical attack, returns double damage).
Link (click to copy):
https://hohoushome.com/b/daa9a
Item: Miracle Seed
Ability: Overgrow
Nature: Modest (+SpA, -Atk)
EVs: 4 Hp / 252 SpA / 252 Spe
IVs: 0 Atk
Moveset:
- Razor Leaf / Frenzy Plant
- Synthesis
- Toxic
- Light Screen
For those intense double battles, Meganium is a distinguished Special Sweeper. It tries to crush rivals using heavy-hitting special power. In the old days before Generation IV, a move's damage category was determined by its type. With Overgrow, at 1/3 or less of its max hp Meganium's grass-type attacks have 1.5x power. With a Miracle Seed equipped to it, Meganium's grass-type attacks have 1.1x power.
◆ Frenzy Plant is a special STAB-boosted 150-base power Grass-type move (Meganium cannot move next turn).
◆ Synthesis is a status move (heals your Meganium by a weather-dependent amount).
◆ Toxic is a status move (badly poisons the target).
◆ Light Screen is a status move (for 5 turns, special damage to allies is halved).
Link (click to copy):
https://hohoushome.com/b/dba9a
Movepool
Want to know what moves Meganium can learn? Check out the full list of moves available in the Pokemon Ruby/Sapphire generation.
Sort and organize the learnset by type, category, accuracy, and power. Moves in bold get the same-type attack bonus (STAB) when used by Meganium.
Damage Modifiers:
Combo List
These are a list of several common move combinations Meganium can perform in Ruby/Sapphire. Not every combo going to be game-changing, but some can be pretty fun to play with. Sometimes these can be easily overlooked or forgotten, hence why we find and list them here. Discover what items, abilities, and moves this Pokemon can use in combination with each other to gain a strategic advantage in competitive battles.
Competitive RS Move and Ability Combos for Meganium
- Moves: Sunny day + Solar beam
- Moves: Endure + Flail
- Moves: Rest + Sleep talk
- Moves: Rest + Snore
- Moves: Substitute + Leech seed
- Moves: Ingrain + Leech seed
- Moves: Toxic + Leech seed
- Ability: Overgrow + Item: Focus sash
- Move: Swagger + Item: Mirror Herb
- Move: Facade + Item: Flame Orb
- Move: Facade + Item: Toxic Orb
- Moves with Priority: Endure, Protect
- Moves that inflict status: Toxic
Moves that boost Meganium's stats
- Ancient Power
- Swords Dance
Most notable and possible best moves for Meganium
- Earthquake
- Frenzy Plant
- Light Screen
- Protect
- Reflect
- Rest
- Toxic
Common Effort Values for Meganium in Ruby and Sapphire
Usage Data
Explore the latest analytical usage data for this Pokémon from various VGC and online competitions. We use this data to develop our strategies and movesets. The data is categorized by competition and skill level: top-ranking trainers, mid-level players, and entry-level players.

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Here are the best movesets for Meganium. Top rated Meganium Ruby/Sapphire movesets. You can find Meganium builds Ruby/Sapphire. Meganium movesets Ruby/Sapphire are listed here. VGC Meganium Competitive Movesets can be found here. Find various EV spreads, find the best nature for Meganium in Ruby/Sapphire along with competitive movesets. Basic info and Movesets for evolution