Gastly
#92 in the FireRed and LeafGreen Pokédex • Gas Pokémon
FireRed
A being that exists as a thin gas. It can topple an Indian elephant by enveloping the prey in two seconds.
LeafGreen
Almost invisible, this gaseous Pokémon cloaks the target and puts it to sleep without notice.
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
| Pokémon | Requires | Evolution |
|---|---|---|
 Gastly #92 | Level 25 |  Haunter #93 |
Haunter #93 | Trade |  Gengar #94 |
FireRed
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 15 | 20% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 17 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 13 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 19 | 5% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 17 | 4% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 17 | 1% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 15 | 20% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 17 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 13 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 17 | 4% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 17 | 1% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 19 | 1% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 15 | 20% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 17 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 13 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 17 | 4% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 17 | 1% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 19 | 1% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 17 | 20% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 15 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 19 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 18 | 4% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 18 | 1% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 17 | 20% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 15 | 10% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 19 | 10% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 18 | 4% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 18 | 1% | - |
Lost Cave Lost Cave (room 1) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 1) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 2) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 2) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 3) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 3) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 4) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 4) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 5) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 5) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 6) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 6) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 7) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 7) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 8) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 8) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 9) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 9) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 10) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 10) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (item rooms) | Walking in tall grass or a cave | 40 | 20% | - |
LeafGreen
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 15 | 20% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 17 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 13 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 19 | 5% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 17 | 4% | - |
Pokémon Tower Pokemon Tower (3F) | Walking in tall grass or a cave | 17 | 1% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 15 | 20% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 17 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 13 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 17 | 4% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 17 | 1% | - |
Pokémon Tower Pokemon Tower (4F) | Walking in tall grass or a cave | 19 | 1% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 15 | 20% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 17 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 13 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 17 | 4% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 17 | 1% | - |
Pokémon Tower Pokemon Tower (5F) | Walking in tall grass or a cave | 19 | 1% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 17 | 20% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 14 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 15 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 19 | 10% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 18 | 4% | - |
Pokémon Tower Pokemon Tower (6F) | Walking in tall grass or a cave | 18 | 1% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 16 | 20% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 17 | 20% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 18 | 10% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 15 | 10% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 19 | 10% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 18 | 4% | - |
Pokémon Tower Pokemon Tower (7F) | Walking in tall grass or a cave | 18 | 1% | - |
Lost Cave Lost Cave (room 1) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 1) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 2) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 2) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 3) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 3) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 4) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 4) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 5) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 5) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 6) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 6) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 7) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 7) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 8) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 8) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 9) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 9) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (room 10) | Walking in tall grass or a cave | 40 | 20% | - |
Lost Cave Lost Cave (room 10) | Walking in tall grass or a cave | 38 | 5% | - |
Lost Cave Lost Cave (item rooms) | Walking in tall grass or a cave | 40 | 20% | - |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Hypnosis |  |  Status | - | 60 | 20 | Hypnotic suggestion is used to make the foe fall into a deep sleep. |
| Start | Lick |  |  Physical | 20 | 100 | 30 | The foe is licked and hit with a long tongue. It may also paralyze. |
| 8 | Spite | | Status | - | 100 | 10 | A move that cuts 2 to 5 PP from the move last used by the foe. |
| 13 | Curse |  | Status | - | - | 10 | A move that works differently for the GHOST-type and all the other types. |
| 16 | Night Shade | |  Special | - | 100 | 15 | An attack with a mirage that inflicts damage matching the user’s level. |
| 21 | Confuse Ray | | Status | - | 100 | 10 | The foe is exposed to a sinister ray that triggers confusion. |
| 28 | Dream Eater | | Special | 100 | 100 | 15 | Absorbs half the damage it inflicted on a sleeping foe to restore HP. |
| 33 | Destiny Bond | | Status | - | - | 5 | If the user faints, the foe delivering the final hit also faints. |
| 36 | Shadow Ball | | Special | 80 | 100 | 15 | A shadowy blob is hurled at the foe. May also lower the foe’s SP. DEF. |
| 41 | Nightmare | | Status | - | 100 | 15 | A sleeping foe is shown a nightmare that inflicts some damage every turn. |
| 48 | Mean Look |  | Status | - | - | 5 | The foe is fixed with a mean look that prevents it from escaping. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Astonish | | Physical | 30 | 100 | 15 | An attack using a startling shout. It also may make the foe flinch. |
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Grudge | | Status | - | - | 5 | If the user faints, this move deletes the PP of the move that finished it. |
| Haze |  | Status | - | - | 30 | Eliminates all stat changes among all Pokémon engaged in battle. |
| Perish Song | | Status | - | - | 5 | Any battler that hears this faints in three turns unless it switches. |
| Psywave | | Special | - | 80 | 15 | The foe is attacked with an odd, hot energy wave that varies in intensity. |
| Will-O-Wisp |  | Status | - | 75 | 15 | A sinister, bluish white flame is shot at the foe to inflict a burn. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM06 | Toxic |  | Status | - | 85 | 10 | A move that badly poisons the foe. Its poison damage worsens every turn. |
| TM10 | Hidden Power | | Special | 1 | 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. |
| 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. |
| TM19 | Giga Drain |  | Special | 75 | 100 | 5 | A harsh attack that absorbs half the damage it inflicted to restore HP. |
| TM21 | Frustration | | Physical | - | 100 | 20 | This attack move grows more powerful the less the user likes its TRAINER. |
| TM24 | Thunderbolt |  | Special | 95 | 100 | 15 | A strong electrical attack that may also leave the foe paralyzed. |
| 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 | | Special | 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. |
| TM36 | Sludge Bomb | | Special | 90 | 100 | 10 | Filthy sludge is hurled at the foe. It may poison the target. |
| 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 | - | - | 5 | 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 | | Physical | 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. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Dream Eater | | Special | 100 | 100 | 15 | Absorbs half the damage it inflicted on a sleeping foe to restore HP. |
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Mimic | | Status | - | - | 10 | The user copies the move last used by the foe for the rest of the battle. |
| Substitute | | Status | - | - | 10 | The user creates a decoy using one- quarter of its full HP. |
Levitate
Not hit by GROUND attacks.
Evades Ground moves.