
| Id | 154 |
| Type | grass |
| Species | Herb Pokémon |
| Height | 1.8 m |
| Weight | 100.5 kg |
| Abilities | Overgrow Hidden Ability: Leaf Guard |
| Local Ids | 3 (Gold/Silver/Crystal) 3 (HeartGold/SoulSilver) |
| Catch rate | 45 |
| Base Friendship | 50 (normal) |
| Base Exp | 236 |
| Growth Rate | Medium Slow |
| Egg Groups | Grass, Monster |
| Gender | 87.5% male, 12.5% female |
| Egg cycles | 20 (4,884–5,140 steps) |
| HP | 80 | |
| Attack | 82 | |
| Defense | 100 | |
| Sp. Atk | 83 | |
| Sp. Def | 100 | |
| Speed | 80 | |
| Total | 525 |
| Level | Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|---|
| 1 | Growl | normal | status | 0 | 100 |
| 1 | Petal Blizzard | grass | physical | 90 | 100 |
| 1 | Petal Dance | grass | special | 120 | 100 |
| 1 | Poison Powder | poison | status | 0 | 75 |
| 1 | Razor Leaf | grass | physical | 55 | 95 |
| 1 | Tackle | normal | physical | 40 | 100 |
| 6 | Razor Leaf | grass | physical | 55 | 95 |
| 9 | Poison Powder | poison | status | 0 | 75 |
| 12 | Synthesis | grass | status | 0 | — |
| 18 | Reflect | psychic | status | 0 | — |
| 22 | Magical Leaf | grass | special | 60 | — |
| 26 | Nature Power | normal | status | 0 | — |
| 34 | Sweet Scent | normal | status | 0 | 100 |
| 40 | Light Screen | psychic | status | 0 | — |
| 46 | Body Slam | normal | physical | 85 | 100 |
| 54 | Safeguard | normal | status | 0 | — |
| 60 | Aromatherapy | grass | status | 0 | — |
| 66 | Solar Beam | grass | special | 120 | 100 |
| 70 | Petal Blizzard | grass | physical | 90 | 100 |
| Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|
| Petal Dance | grass | special | 120 | 100 |
| Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|
| Ancient Power | rock | special | 60 | 100 |
| Aromatherapy | grass | status | 0 | — |
| Body Slam | normal | physical | 85 | 100 |
| Counter | fighting | physical | 0 | 100 |
| Flail | normal | physical | 0 | 100 |
| Grassy Terrain | grass | status | 0 | — |
| Heal Pulse | psychic | status | 0 | — |
| Ingrain | grass | status | 0 | — |
| Leaf Storm | grass | special | 130 | 90 |
| Leech Seed | grass | status | 0 | 90 |
| Nature Power | normal | status | 0 | — |
| Vine Whip | grass | physical | 45 | 100 |
| Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|
| Frenzy Plant | grass | special | 150 | 90 |
| TM | Move | Type | Category | Power | Accuracy |
|---|---|---|---|---|---|
| 9 | Bullet Seed | grass | physical | 25 | 100 |
| 10 | Work Up | normal | status | 0 | — |
| 11 | Sunny Day | fire | status | 0 | — |
| 15 | Hyper Beam | normal | special | 150 | 90 |
| 16 | Light Screen | psychic | status | 0 | — |
| 17 | Protect | normal | status | 0 | — |
| 19 | Giga Drain | grass | special | 75 | 100 |
| 20 | Safeguard | normal | status | 0 | — |
| 22 | Solar Beam | grass | special | 120 | 100 |
| 23 | Iron Tail | steel | physical | 100 | 75 |
| 26 | Earthquake | ground | physical | 100 | 100 |
| 32 | Double Team | normal | status | 0 | — |
| 33 | Reflect | psychic | status | 0 | — |
| 42 | Facade | normal | physical | 70 | 100 |
| 44 | Rest | psychic | status | 0 | — |
| 45 | Attract | normal | status | 0 | 100 |
| 53 | Energy Ball | grass | special | 90 | 100 |
| 58 | Endure | normal | status | 0 | — |
| 68 | Giga Impact | normal | physical | 150 | 90 |
| 70 | Flash | normal | status | 0 | 100 |
| 75 | Swords Dance | normal | status | 0 | — |
| 82 | Sleep Talk | normal | status | 0 | — |
| 83 | Bulldoze | ground | physical | 60 | 100 |
| 86 | Grass Knot | grass | special | 0 | 100 |
| 87 | Swagger | normal | status | 0 | 85 |
| 90 | Substitute | normal | status | 0 | — |
| 93 | Cut | normal | physical | 50 | 95 |
| 96 | Strength | normal | physical | 80 | 100 |
| 98 | Rock Smash | fighting | physical | 40 | 100 |
| 100 | Rock Climb | normal | physical | 90 | 85 |
Meganium can not get any moves from trs.
| English | Meganium |
|---|---|
| Spanish | Meganium |
| Italian | Meganium |
| Japanese | メガニウム (Meganium) |
| German | Meganie |
| French | Méganium |
| Gold Silver Crystal | Chikorita, Bayleef |
|---|---|
| Ruby Sapphire FireRed LeafGreen | Trade/migrate from another game |
| Emerald | Chikorita, Bayleef |
| Diamond Pearl Platinum | Trade/migrate from another game |
| HeartGold SoulSilver | Chikorita, Bayleef |
| Black White Black 2 White 2 | Trade/migrate from another game |
| X Y | Trade/migrate from another game |
| Omega Ruby Alpha Sapphire | Chikorita, Bayleef |
| Sun Moon | Chikorita, Bayleef |
| Ultra Sun Ultra Moon | Trade/migrate from another game |
| Let's Go Pikachu Let's Go Eevee | Not available in this game |
| Sword Shield | Not available in this game |
| Brilliant Diamond Shining Pearl | Chikorita, Bayleef |