Gyarados
#77 in the HeartGold & SoulSilver Pokédex • Atrocious Pokémon
Gyarados
#77 in the HeartGold & SoulSilver Pokédex • Atrocious Pokémon
Stats
Min
Max
HP
95
300
394
Attack
125
229
383
Defense
79
146
282
Sp. Atk
60
112
240
Sp. Def
100
184
328
Speed
81
150
287
Total
540
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
Gyarados
Atrocious Pokémon


Growth
| Pokédexes | Updated Johto #77 |
|---|---|
| EV yield | 2 Atk |
| Catch rate | 45 |
| Base Exp. | 189 |
Lore

HeartGold
They say that during past strife, GYARADOS would appear and leave blazing ruins in its wake.

SoulSilver
Once it appears, it goes on a rampage. It remains enraged until it demolishes everything around it.
Evolution
| Pokémon | Requires | Evolution |
|---|---|---|
![]() Magikarp #76 | Level 20 | ![]() Gyarados #77 |
Encounters
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Lake of Rage | Fishing with a Good Rod | 20 | 10% | - |
Lake of Rage | Fishing with a Super Rod | 40 | 30% | - |
Lake of Rage | Surfing | 10-20 | 5% | - |
Lake of Rage | Surfing | 10-20 | 4% | - |
Lake of Rage | Surfing | 10-20 | 1% | - |
Lake of Rage | Static encounter, only one chance | 30 | 100% | - |
Seafoam Islands Seafoam Islands (B4F) | Fishing with a Super Rod | 40 | 40% | - |
Mt. Silver Mount Silver (1F) | Fishing with a Good Rod | 20 | 10% | At night |
Mt. Silver Mount Silver (1F) | Fishing with a Super Rod | 40 | 40% | - |
Mt. Silver Mount Silver (1F) | Fishing with a Super Rod | 40 | 30% | At night |
Mt. Silver Mount Silver (1F) | Fishing with a Super Rod | 40 | 10% | - |
Fuchsia City | Fishing with a Good Rod | 20 | 10% | - |
Fuchsia City | Fishing with a Super Rod | 40 | 30% | - |
Cerulean Cave Cerulean Cave (1F) | Fishing with a Super Rod | 40 | 15% | - |
Cerulean Cave Cerulean Cave (1F) | Fishing with a Super Rod | 40 | 10% | - |
Cerulean Cave Cerulean Cave (1F) | Fishing with a Super Rod | 40 | 5% | - |
Cerulean Cave Cerulean Cave (2F) | Fishing with a Super Rod | 40 | 15% | - |
Cerulean Cave Cerulean Cave (2F) | Fishing with a Super Rod | 40 | 10% | - |
Cerulean Cave Cerulean Cave (2F) | Fishing with a Super Rod | 40 | 5% | - |
Cerulean Cave Cerulean Cave (B1F) | Fishing with a Super Rod | 40 | 15% | - |
Cerulean Cave Cerulean Cave (B1F) | Fishing with a Super Rod | 40 | 10% | - |
Cerulean Cave Cerulean Cave (B1F) | Fishing with a Super Rod | 40 | 5% | - |
Johto Safari Zone Safari Zone Marshland | Fishing with a Super Rod | 36 | 10% | - |
Johto Safari Zone Safari Zone Marshland | Fishing with a Super Rod | 37 | 10% | - |
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Lake of Rage | Fishing with a Good Rod | 20 | 10% | - |
Lake of Rage | Fishing with a Super Rod | 40 | 30% | - |
Lake of Rage | Surfing | 10-20 | 5% | - |
Lake of Rage | Surfing | 10-20 | 4% | - |
Lake of Rage | Surfing | 10-20 | 1% | - |
Lake of Rage | Static encounter, only one chance | 30 | 100% | - |
Seafoam Islands Seafoam Islands (B4F) | Fishing with a Super Rod | 40 | 40% | - |
Mt. Silver Mount Silver (1F) | Fishing with a Good Rod | 20 | 10% | At night |
Mt. Silver Mount Silver (1F) | Fishing with a Super Rod | 40 | 40% | - |
Mt. Silver Mount Silver (1F) | Fishing with a Super Rod | 40 | 30% | At night |
Mt. Silver Mount Silver (1F) | Fishing with a Super Rod | 40 | 10% | - |
Fuchsia City | Fishing with a Good Rod | 20 | 10% | - |
Fuchsia City | Fishing with a Super Rod | 40 | 30% | - |
Cerulean Cave Cerulean Cave (1F) | Fishing with a Super Rod | 40 | 15% | - |
Cerulean Cave Cerulean Cave (1F) | Fishing with a Super Rod | 40 | 10% | - |
Cerulean Cave Cerulean Cave (1F) | Fishing with a Super Rod | 40 | 5% | - |
Cerulean Cave Cerulean Cave (2F) | Fishing with a Super Rod | 40 | 15% | - |
Cerulean Cave Cerulean Cave (2F) | Fishing with a Super Rod | 40 | 10% | - |
Cerulean Cave Cerulean Cave (2F) | Fishing with a Super Rod | 40 | 5% | - |
Cerulean Cave Cerulean Cave (B1F) | Fishing with a Super Rod | 40 | 15% | - |
Cerulean Cave Cerulean Cave (B1F) | Fishing with a Super Rod | 40 | 10% | - |
Cerulean Cave Cerulean Cave (B1F) | Fishing with a Super Rod | 40 | 5% | - |
Johto Safari Zone Safari Zone Marshland | Fishing with a Super Rod | 36 | 10% | - |
Johto Safari Zone Safari Zone Marshland | Fishing with a Super Rod | 37 | 10% | - |
Moves
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Thrash | ![]() | Physical | 90 | 100 | 20 | The user rampages and attacks for two to three turns. It then becomes confused, however. |
| 20 | Bite | ![]() | Physical | 60 | 100 | 25 | The foe is bitten with viciously sharp fangs. It may make the target flinch. |
| 23 | Dragon Rage | ![]() | Special | - | 100 | 10 | The foe is stricken by a shock wave. This attack always inflicts 40 HP damage. |
| 26 | Leer | ![]() | Status | - | 100 | 30 | The foe is given an intimidating leer with sharp eyes. The target’s Defense stat is reduced. |
| 29 | Twister | ![]() | Special | 40 | 100 | 20 | The user whips up a vicious tornado to tear at the foe. It may also make the foe flinch. |
| 32 | Ice Fang | ![]() | Physical | 65 | 95 | 15 | The user bites with cold-infused fangs. It may also make the foe flinch or freeze. |
| 35 | Aqua Tail | ![]() | Physical | 90 | 90 | 10 | The user attacks by swinging its tail as if it were a vicious wave in a raging storm. |
| 38 | Rain Dance | ![]() | Status | - | - | 5 | The user summons a heavy rain that falls for five turns, powering up Water- type moves. |
| 41 | Hydro Pump | ![]() | Special | 120 | 80 | 5 | The foe is blasted by a huge volume of water launched under great pressure. |
| 44 | Dragon Dance | ![]() | Status | - | - | 20 | The user vigorously performs a mystic, powerful dance that boosts its Attack and Speed stats. |
| 47 | Hyper Beam | ![]() | Special | 150 | 90 | 5 | The foe is attacked with a powerful beam. The user must rest on the next turn to regain its energy. |
Machines
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM03 | Water Pulse | ![]() | Special | 60 | 100 | 20 | The user attacks the foe with a pulsing blast of water. It may also confuse the foe. |
| TM05 | Roar | ![]() | Status | - | 100 | 20 | The foe is scared off, to be replaced by another Pokémon in its party. In the wild, the battle ends. |
| TM06 | Toxic | ![]() | Status | - | 85 | 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 | 1 | 100 | 15 | A unique attack that varies in type and intensity depending on the Pokémon using it. |
| TM12 | Taunt | ![]() | Status | - | 100 | 20 | The foe is taunted into a rage that allows it to use only attack moves for two to four turns. |
| TM13 | Ice Beam | ![]() | Special | 95 | 100 | 10 | The foe is struck with an icy-cold beam of energy. It may also freeze the target solid. |
| TM14 | Blizzard | ![]() | Special | 120 | 70 | 5 | A howling blizzard is summoned to strike the foe. It may also freeze the target solid. |
| TM15 | Hyper Beam | ![]() | Special | 150 | 90 | 5 | The foe is attacked with a powerful beam. The user must rest on the next turn to regain its energy. |
| TM17 | Protect | ![]() | Status | - | - | 10 | It 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. |
| TM24 | Thunderbolt | ![]() | Special | 95 | 100 | 15 | A strong electric blast is loosed at the foe. It may also leave the foe paralyzed. |
| TM25 | Thunder | ![]() | Special | 120 | 70 | 10 | A wicked thunderbolt is dropped on the foe to inflict damage. It may also leave the target paralyzed. |
| TM26 | Earthquake | ![]() | Physical | 100 | 100 | 10 | The user sets off an earthquake that hits all the Pokémon in the battle. |
| TM27 | Return | ![]() | Physical | - | 100 | 20 | A full-power attack that grows more powerful the more the user likes its Trainer. |
| TM32 | Double Team | ![]() | Status | - | - | 15 | By moving rapidly, the user makes illusory copies of itself to raise its evasiveness. |
| TM35 | Flamethrower | ![]() | Special | 95 | 100 | 15 | The foe is scorched with an intense blast of fire. The target may also be left with a burn. |
| TM37 | Sandstorm | ![]() | Status | - | - | 10 | A five-turn sand storm is summoned to hurt all combatant types except Rock, Ground, and Steel. |
| TM38 | Fire Blast | ![]() | Special | 120 | 85 | 5 | The foe is attacked with an intense blast of all-consuming fire. It may also leave the target with a burn. |
| TM41 | Torment | ![]() | Status | - | 100 | 15 | The user torments and enrages the foe, making it incapable of using the same move twice in a row. |
| TM42 | Facade | ![]() | Physical | 70 | 100 | 20 | An attack move that doubles its power if the user is poisoned, paralyzed, or has a burn. |
| TM43 | Secret Power | ![]() | Physical | 70 | 100 | 20 | The user attacks with a secret power. Its added effects vary depending on the user’s environment. |
| TM44 | Rest | ![]() | Status | - | - | 5 | The user goes to sleep for two turns. It fully restores the user’s HP and heals any status problem. |
| TM45 | Attract | ![]() | Status | - | 100 | 15 | If it is the opposite gender of the user, the foe becomes infatuated and less likely to attack. |
| TM55 | Brine | ![]() | Special | 65 | 100 | 10 | If the foe’s HP is down to about half, this attack will hit with double the power. |
| TM58 | Endure | ![]() | Status | - | - | 10 | The user endures any attack with at least 1 HP. Its chance of failing rises if it is used in succession. |
| TM59 | Dragon Pulse | ![]() | Special | 90 | 100 | 10 | The foe is attacked with a shock wave generated by the user’s gaping mouth. |
| TM66 | Payback | ![]() | Physical | 50 | 100 | 10 | If the user can use this attack after the foe attacks, its power is doubled. |
| TM68 | Giga Impact | ![]() | Physical | 150 | 90 | 5 | The user charges at the foe using every bit of its power. The user must rest on the next turn. |
| TM71 | Stone Edge | ![]() | Physical | 100 | 80 | 5 | The user stabs the foe with a sharpened stone. It has a high critical-hit ratio. |
| TM72 | Avalanche | ![]() | Physical | 60 | 100 | 10 | An attack move that inflicts double the damage if the user has been hurt by the foe in the same turn. |
| TM73 | Thunder Wave | ![]() | Status | - | 100 | 20 | A weak electric charge is launched at the foe. It causes paralysis if it hits. |
| TM78 | Captivate | ![]() | Status | - | 100 | 20 | If it is the opposite gender of the user, the foe is charmed into sharply lowering its Sp. Atk stat. |
| TM79 | Dark Pulse | ![]() | Special | 80 | 100 | 15 | The user releases a horrible aura imbued with dark thoughts. It may also make the target flinch. |
| TM82 | Sleep Talk | ![]() | Status | - | - | 10 | While it is asleep, the user randomly uses one of the moves it knows. |
| TM83 | Natural Gift | ![]() | Physical | - | 100 | 15 | The user draws power to attack by using its held Berry. The Berry determines its type and power. |
| TM87 | Swagger | ![]() | Status | - | 90 | 15 | The user enrages the foe into confusion. However, it also sharply raises the foe’s Attack stat. |
| TM90 | Substitute | ![]() | Status | - | - | 10 | The user makes a copy of itself using some of its HP. The copy serves as the user’s decoy. |
| HM03 | Surf | ![]() | Special | 95 | 100 | 15 | It swamps the entire battlefield with a giant wave. It can also be used for crossing water. |
| HM04 | Strength | ![]() | Physical | 80 | 100 | 15 | The foe is slugged with a punch thrown at maximum power. It can also be used to move boulders. |
| HM05 | Whirlpool | ![]() | Special | 15 | 70 | 15 | Traps the foe inside a whirlpool that lasts for two to five turns. The user can pass through whirlpools. |
| HM06 | Rock Smash | ![]() | Physical | 40 | 100 | 15 | The user hits with a punch that may lower the target’s Defense. It can also smash cracked boulders. |
| HM07 | Waterfall | ![]() | Physical | 80 | 100 | 15 | The user charges at the foe rapidly, and may make it flinch. It can also be used to climb a waterfall. |
Tutors
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Aqua Tail | ![]() | Physical | 90 | 90 | 10 | The user attacks by swinging its tail as if it were a vicious wave in a raging storm. |
| Bounce | ![]() | Physical | 85 | 85 | 5 | The user bounces up high, then drops on the foe on the second turn. It may also paralyze the foe. |
| Dive | ![]() | Physical | 80 | 100 | 10 | A two-turn attack. The user dives underwater on the first turn, then hits on the next turn. |
| Headbutt | ![]() | Physical | 70 | 100 | 15 | The user attacks with its head. It may make the foe flinch. To find Pokémon, hit trees. |
| Icy Wind | ![]() | Special | 55 | 95 | 15 | The user attacks with a gust of chilled air. It also lowers the target’s Speed stat. |
| Iron Head | ![]() | Physical | 80 | 100 | 15 | The foe slams the target with its steel-hard head. It may also make the target flinch. |
| Outrage | ![]() | Physical | 120 | 100 | 15 | The user rampages and attacks for two to three turns. However, it then becomes confused. |
| Snore | ![]() | Special | 40 | 100 | 15 | An attack that can be used only if the user is asleep. The harsh noise may also make the foe flinch. |
| Spite | ![]() | Status | - | 100 | 10 | The user looses its grudge on the move last used by the foe by cutting 4 PP from it. |
| Twister | ![]() | Special | 40 | 100 | 20 | The user whips up a vicious tornado to tear at the foe. It may also make the foe flinch. |
| Uproar | ![]() | Special | 50 | 100 | 10 | The user attacks in an uproar for two to five turns. Over that time, no one can fall asleep. |
Traits
Intimidate
Ability Slot 1
Lowers the foe’s Attack stat.
Lowers opponents' Attack one stage upon entering battle.







































Physical

Special
Status









