Edition differences: original GBA and Nintendo Switch (2026)
Battle data describes Generation III rules. Availability notes distinguish native catches, evolution and breeding from original GBA imports. GBA games can trade with compatible Generation III games after the network quest; Switch supports local FireRed/LeafGreen trading and cannot import Pokémon from other games. Transfers to Pokémon HOME are one way.
GBA: AuroraTicket and MysticTicket required historical event distributions. Switch: both tickets are added after entering the Hall of Fame, providing access to Deoxys on Birth Island and Lugia/Ho-Oh on Navel Rock. Other event Pokémon and GBA imports are not made available by these tickets.
Original GBA: a roaming Entei or Raikou that successfully ends an encounter with Roar disappears permanently because of a game bug. The Switch editions fix this Roar disappearance bug.
Grumpig
#326 in the National Pokédex • Manipulate Pokémon
Pokédex entries
FireRed
It can gain control over foes by doing odd dance steps. The black pearls on its forehead are precious gems.
LeafGreen
It can gain control over foes by doing odd dance steps. The black pearls on its forehead are precious gems.
Details
Stats
Min
Max
HP
80
270
364
Attack
45
85
207
Defense
65
121
251
Sp. Atk
90
166
306
Sp. Def
110
202
350
Speed
80
148
284
Total
470
Ranges are for Level 100. Max assumes a beneficial nature, 252 EVs, and 31 IVs; min assumes a hindering nature, 0 EVs, and 0 IVs.
Game availability
GBA: requires importing from another Generation III game.Switch: unavailable. This page documents the supported Generation III Pokémon.
Growth
| EV yield | 2 SpD |
|---|---|
| Catch rate | 60 |
| Base Exp. | 164 |
Eggs
| Egg groups | |
|---|---|
| Gender | 50% male 50% female |
| Egg cycles | 20 (5,375 steps) |
Evolution
| Pokémon | Requires | Evolution |
|---|---|---|
![]() Spoink #325 | Level 32 This line requires importing Pokémon from another Generation III game on GBA; unavailable on Switch. Requires the National Pokédex. | ![]() Grumpig #326 |
Moves
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Psybeam | ![]() | Special | 65 | 100 | 20 | A peculiar ray is shot at the foe. It may leave the foe confused. |
| Start | Psywave | ![]() | Special | - | 80 | 15 | The foe is attacked with an odd, hot energy wave that varies in intensity. |
| Start | Splash | ![]() | Status | - | - | 40 | The user just flops and splashes around without having any effect. |
| Start | Odor Sleuth | ![]() | Status | - | - | 40 | Completely negates the foe’s efforts to heighten its ability to evade. |
| 7 | Psywave | ![]() | Special | - | 80 | 15 | The foe is attacked with an odd, hot energy wave that varies in intensity. |
| 10 | Odor Sleuth | ![]() | Status | - | - | 40 | Completely negates the foe’s efforts to heighten its ability to evade. |
| 16 | Psybeam | ![]() | Special | 65 | 100 | 20 | A peculiar ray is shot at the foe. It may leave the foe confused. |
| 19 | Psych Up | ![]() | Status | - | - | 10 | The user hypnotizes itself into copying any stat change made by the foe. |
| 25 | Confuse Ray | ![]() | Status | - | 100 | 10 | The foe is exposed to a sinister ray that triggers confusion. |
| 28 | Magic Coat | ![]() | Status | - | - | 15 | Reflects back the foe’s LEECH SEED and any status-damaging move. |
| 37 | Psychic | ![]() | Special | 90 | 100 | 10 | A strong telekinetic attack. It may also lower the foe’s SP. DEF stat. |
| 43 | Rest | ![]() | Status | - | - | 10 | The user sleeps for two turns to fully restore HP and heal any status problem. |
| 43 | Snore | ![]() | Physical | 40 | 100 | 15 | An attack that can be used only while asleep. It may cause flinching. |
| 55 | Bounce | ![]() | Physical | 85 | 85 | 5 | The user bounces on the foe on the 2nd turn. It may paralyze the foe. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM01 | Focus Punch | ![]() | Physical | 150 | 100 | 20 | An attack that is executed last. The user flinches if hit beforehand. |
| TM04 | Calm Mind | ![]() | Status | - | - | 20 | The user focuses its mind to raise the SP. ATK and SP. DEF stats. |
| TM06 | Toxic | ![]() | Status | - | 85 | 10 | A move that badly poisons the foe. Its poison damage worsens every turn. |
| TM10 | Hidden Power | ![]() | Physical | - | 100 | 15 | An attack that varies in type and intensity depending on the user. |
| TM11 | Sunny Day | ![]() | Status | - | - | 5 | The sun blazes for five turns, powering up FIRE-type moves. |
| TM12 | Taunt | ![]() | Status | - | 100 | 20 | The foe is taunted into a rage that allows it to use only attack moves. |
| TM15 | Hyper Beam | ![]() | Physical | 150 | 90 | 5 | A severely damaging attack that makes the user rest on the next turn. |
| TM16 | Light Screen | ![]() | Status | - | - | 30 | A wall of light cuts damage from SP. ATK attacks for five turns. |
| TM17 | Protect | ![]() | Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| TM18 | Rain Dance | ![]() | Status | - | - | 5 | A heavy rain falls for five turns, powering up WATER-type moves. |
| TM21 | Frustration | ![]() | Physical | - | 100 | 20 | This attack move grows more powerful the less the user likes its TRAINER. |
| TM23 | Iron Tail | ![]() | Physical | 100 | 75 | 15 | An attack with a steel-hard tail. It may lower the foe’s DEFENSE stat. |
| TM27 | Return | ![]() | Physical | - | 100 | 20 | This attack move grows more powerful the more the user likes its TRAINER. |
| TM29 | Psychic | ![]() | Special | 90 | 100 | 10 | A strong telekinetic attack. It may also lower the foe’s SP. DEF stat. |
| TM30 | Shadow Ball | ![]() | Physical | 80 | 100 | 15 | A shadowy blob is hurled at the foe. May also lower the foe’s SP. DEF. |
| TM32 | Double Team | ![]() | Status | - | - | 15 | The user creates illusory copies of itself to raise its evasiveness. |
| TM33 | Reflect | ![]() | Status | - | - | 20 | A wall of light cuts damage from physical attacks for five turns. |
| TM34 | Shock Wave | ![]() | Special | 60 | - | 20 | A rapid jolt of electricity strikes the foe. It can’t be evaded. |
| TM41 | Torment | ![]() | Status | - | 100 | 15 | It enrages the foe, making it incapable of using the same move successively. |
| TM42 | Facade | ![]() | Physical | 70 | 100 | 20 | An attack that is boosted if user is burned, poisoned, or paralyzed. |
| TM43 | Secret Power | ![]() | Physical | 70 | 100 | 20 | An attack that may have an additional effect that varies with the terrain. |
| TM44 | Rest | ![]() | Status | - | - | 10 | The user sleeps for two turns to fully restore HP and heal any status problem. |
| TM45 | Attract | ![]() | Status | - | 100 | 15 | If it is the other gender, the foe is made infatuated and unlikely to attack. |
| TM46 | Thief | ![]() | Special | 40 | 100 | 10 | An attack that may take the foe’s held item if the user isn’t holding one. |
| TM48 | Skill Swap | ![]() | Status | - | - | 10 | The user employs its psychic power to swap abilities with the foe. |
| TM49 | Snatch | ![]() | Status | - | - | 10 | Steals the effects of the foe’s healing or status-changing move. |
| HM05 | Flash | ![]() | Status | - | 70 | 20 | A blast of light that cuts the foe’s accuracy. It also illuminates caves. |
Tutors
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Body Slam | ![]() | Physical | 85 | 100 | 15 | The user drops its full body on the foe. It may leave the foe paralyzed. |
| Counter | ![]() | Physical | - | 100 | 20 | A retaliation move that counters any physical hit with double the damage. |
| Double-Edge | ![]() | Physical | 120 | 100 | 15 | A reckless, life-risking tackle that also hurts the user a little. |
| Dream Eater | ![]() | Special | 100 | 100 | 15 | Absorbs half the damage it inflicted on a sleeping foe to restore HP. |
| Mega Kick | ![]() | Physical | 120 | 75 | 5 | The foe is attacked by a kick fired with muscle-packed power. |
| Mega Punch | ![]() | Physical | 80 | 85 | 20 | The foe is slugged by a punch thrown with muscle-packed power. |
| Mimic | ![]() | Status | - | - | 10 | The user copies the move last used by the foe for the rest of the battle. |
| Seismic Toss | ![]() | Physical | - | 100 | 20 | A gravity-fed throw that causes damage matching the user’s level. |
| Substitute | ![]() | Status | - | - | 10 | The user creates a decoy using one-quarter of its full HP. |
Traits
Thick Fat
Heat-and-cold protection.
Halves damage from Fire and Ice moves.
Own Tempo
Prevents confusion.
Prevents confusion.







































Special
Status
Physical







