Gastrodon
#423 in the Omega Ruby and Alpha Sapphire Pokédex • Sea Slug Pokémon
Gastrodon
#423 in the Omega Ruby and Alpha Sapphire Pokédex • Sea Slug Pokémon
Stats
Min
Max
HP
111
332
426
Attack
83
153
291
Defense
68
126
258
Sp. Atk
92
170
311
Sp. Def
82
152
289
Speed
39
74
194
Total
475
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.

Normal

Shiny
Gastrodon
Sea Slug Pokémon


Height
Weight
Growth
| Pokédexes | - |
|---|---|
| EV yield | 2 HP |
| Catch rate | 75 |
| Base Exp. | 166 |
Lore

Omega Ruby
When its natural enemy attacks, it oozes purple fluid and escapes.

Alpha Sapphire
It apparently had a huge shell for protection in ancient times. It lives in shallow tidal pools.
Evolution
| Pokémon | Requires | Evolution |
|---|---|---|
![]() Shellos #422 | Level 30 | ![]() Gastrodon #423 |
Moves
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Harden | ![]() | Status | - | - | 30 | The user stiffens all the muscles in its body to raise its Defense stat. |
| Start | Mud-Slap | ![]() | Special | 20 | 100 | 10 | The user hurls mud in the target’s face to inflict damage and lower its accuracy. |
| Start | Mud Sport | ![]() | Status | - | - | 15 | The user covers itself with mud. This weakens Electric-type moves for five turns. |
| Start | Water Pulse | ![]() | Special | 60 | 100 | 20 | The user attacks the target with a pulsing blast of water. This may also confuse the target. |
| 2 | Mud Sport | ![]() | Status | - | - | 15 | The user covers itself with mud. This weakens Electric-type moves for five turns. |
| 4 | Harden | ![]() | Status | - | - | 30 | The user stiffens all the muscles in its body to raise its Defense stat. |
| 7 | Water Pulse | ![]() | Special | 60 | 100 | 20 | The user attacks the target with a pulsing blast of water. This may also confuse the target. |
| 11 | Mud Bomb | ![]() | Special | 65 | 85 | 10 | The user launches a hard-packed mud ball to attack. This may also lower the target’s accuracy. |
| 16 | Hidden Power | ![]() | Special | 60 | 100 | 15 | A unique attack that varies in type depending on the Pokémon using it. |
| 22 | Rain Dance | ![]() | Status | - | - | 5 | The user summons a heavy rain that falls for five turns, powering up Water-type moves. |
| 29 | Body Slam | ![]() | Physical | 85 | 100 | 15 | The user drops onto the target with its full body weight. This may also leave the target with paralysis. |
| 41 | Muddy Water | ![]() | Special | 90 | 85 | 10 | The user attacks by shooting muddy water at the opposing Pokémon. This may also lower their accuracy. |
| 54 | Recover | ![]() | Status | - | - | 5 | Restoring its own cells, the user restores its own HP by half of its max HP. |
Machines
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM06 | Toxic | ![]() | Status | - | 90 | 10 | A move that leaves the target badly poisoned. Its poison damage worsens every turn. |
| TM07 | Hail | ![]() | Status | - | - | 10 | The user summons a hailstorm lasting five turns. It damages all Pokémon except the Ice type. |
| TM10 | Hidden Power | ![]() | Special | 60 | 100 | 15 | A unique attack that varies in type depending on the Pokémon using it. |
| TM13 | Ice Beam | ![]() | Special | 90 | 100 | 10 | The target is struck with an icy-cold beam of energy. This may also leave the target frozen. |
| TM14 | Blizzard | ![]() | Special | 110 | 70 | 5 | A howling blizzard is summoned to strike opposing Pokémon. This may also leave the opposing Pokémon frozen. |
| TM15 | Hyper Beam | ![]() | Special | 150 | 90 | 5 | The target is attacked with a powerful beam. The user can’t move on the next turn. |
| TM17 | Protect | ![]() | Status | - | - | 10 | Enables the user to evade all attacks. Its chance of failing rises if it is used in succession. |
| TM18 | Rain Dance | ![]() | Status | - | - | 5 | The user summons a heavy rain that falls for five turns, powering up Water-type moves. |
| TM21 | Frustration | ![]() | Physical | - | 100 | 20 | A full-power attack that grows more powerful the less the user likes its Trainer. |
| TM26 | Earthquake | ![]() | Physical | 100 | 100 | 10 | The user sets off an earthquake that strikes every Pokémon around it. |
| TM27 | Return | ![]() | Physical | - | 100 | 20 | A full-power attack that grows more powerful the more the user likes its Trainer. |
| TM28 | Dig | ![]() | Physical | 80 | 100 | 10 | The user burrows, then attacks on the next turn. It can also be used to exit dungeons. |
| TM32 | Double Team | ![]() | Status | - | - | 15 | By moving rapidly, the user makes illusory copies of itself to raise its evasiveness. |
| TM34 | Sludge Wave | ![]() | Special | 95 | 100 | 10 | The user strikes everything around it by swamping the area with a giant sludge wave. This may also poison those hit. |
| TM36 | Sludge Bomb | ![]() | Special | 90 | 100 | 10 | Unsanitary sludge is hurled at the target. This may also poison the target. |
| TM37 | Sandstorm | ![]() | Status | - | - | 10 | A five-turn sandstorm is summoned to hurt all combatants except the Rock, Ground, and Steel types. |
| TM39 | Rock Tomb | ![]() | Physical | 60 | 95 | 15 | Boulders are hurled at the target. This also lowers the target’s Speed stat by preventing its movement. |
| TM42 | Facade | ![]() | Physical | 70 | 100 | 20 | An attack move that doubles its power if the user is poisoned, burned, or has paralysis. |
| TM44 | Rest | ![]() | Status | - | - | 5 | The user goes to sleep for two turns. This fully restores the user’s HP and heals any status conditions. |
| TM45 | Attract | ![]() | Status | - | 100 | 15 | If it is the opposite gender of the user, the target becomes infatuated and less likely to attack. |
| TM48 | Round | ![]() | Special | 60 | 100 | 15 | The user attacks the target with a song. Others can join in the Round and make the attack do greater damage. |
| TM55 | Scald | ![]() | Special | 80 | 100 | 15 | The user shoots boiling hot water at its target. This may also leave the target with a burn. |
| TM68 | Giga Impact | ![]() | Physical | 150 | 90 | 5 | The user charges at the target using every bit of its power. The user can’t move on the next turn. |
| TM70 | Flash | ![]() | Status | - | 100 | 20 | The user flashes a bright light that cuts the target’s accuracy. It can also be used to illuminate dark caves. |
| TM71 | Stone Edge | ![]() | Physical | 100 | 80 | 5 | The user stabs the target with sharpened stones from below. Critical hits land more easily. |
| TM78 | Bulldoze | ![]() | Physical | 60 | 100 | 20 | The user strikes everything around it by stomping down on the ground. This lowers the Speed stat of those hit. |
| TM80 | Rock Slide | ![]() | Physical | 75 | 90 | 10 | Large boulders are hurled at the opposing Pokémon to inflict damage. This may also make the opposing Pokémon flinch. |
| TM83 | Infestation | ![]() | Special | 20 | 100 | 20 | The target is infested and attacked for four to five turns. The target can’t flee during this time. |
| TM87 | Swagger | ![]() | Status | - | 90 | 15 | The user enrages and confuses the target. However, this also sharply raises the target’s Attack stat. |
| TM88 | Sleep Talk | ![]() | Status | - | - | 10 | While it is asleep, the user randomly uses one of the moves it knows. |
| TM90 | Substitute | ![]() | Status | - | - | 10 | The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy. |
| TM94 | Secret Power | ![]() | Physical | 70 | 100 | 20 | An attack whose additional effects depend upon where it was used. Can also be used to make a Secret Base. |
| TM100 | Confide | ![]() | Status | - | - | 20 | The user tells the target a secret, and the target loses its ability to concentrate. This lowers the target’s Sp. Atk stat. |
| HM03 | Surf | ![]() | Special | 90 | 100 | 15 | The user attacks everything around it by swamping its surroundings with a giant wave. This can also be used for crossing water. |
| HM04 | Strength | ![]() | Physical | 80 | 100 | 15 | The target is slugged with a punch thrown at maximum power. This can also be used to move heavy boulders. |
| HM05 | Waterfall | ![]() | Physical | 80 | 100 | 15 | The user charges at the target and may make it flinch. This can also be used to climb a waterfall. |
| HM06 | Rock Smash | ![]() | Physical | 40 | 100 | 15 | The user attacks with a punch. This may also lower the target’s Defense stat. This move can also shatter rocks in the field. |
| HM07 | Dive | ![]() | Physical | 80 | 100 | 10 | Diving on the first turn, the user floats up and attacks on the next turn. It can be used to dive deep in the ocean. |
Tutors
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Block | ![]() | Status | - | - | 5 | The user blocks the target’s way with arms spread wide to prevent escape. |
| Earth Power | ![]() | Special | 90 | 100 | 10 | The user makes the ground under the target erupt with power. This may also lower the target’s Sp. Def. |
| Icy Wind | ![]() | Special | 55 | 95 | 15 | The user attacks with a gust of chilled air. This also lowers the opposing Pokémon’s Speed stats. |
| Pain Split | ![]() | Status | - | - | 20 | The user adds its HP to the target’s HP, then equally shares the combined HP with the target. |
| Snore | ![]() | Special | 50 | 100 | 15 | An attack that can be used only if the user is asleep. The harsh noise may also make the target flinch. |
| Water Pulse | ![]() | Special | 60 | 100 | 20 | The user attacks the target with a pulsing blast of water. This may also confuse the target. |
Traits
Sticky Hold
Ability Slot 1
Protects the Pokémon from item theft.
Prevents a held item from being removed by other Pokémon.
Storm Drain
Ability Slot 2
Draws in all Water-type moves to boost its Sp. Atk stat.
Redirects single-target Water moves to this Pokémon where possible. Absorbs Water moves, raising Special Attack one stage.
Sand Force(Hidden Ability)
Boosts certain moves’ power in a sandstorm.
Strengthens Rock, Ground, and Steel moves to 1.3× their power during a sandstorm. Protects against sandstorm damage.





































Status
Special
Physical



