#0092 · Kanto · Generation 1

Gastly

Gas Pokémon · Ghost/Poison-type

Gastly is a Ghost/Poison-type Pokémon, the Gas Pokémon, number 92 (#0092) in the National Pokédex. It was introduced in Generation 1 and comes from the Kanto region. It is 1.3 m tall and weighs 0.1 kg.

Gastly is the Gas Pokémon, a floating ball of poisonous gas that can slip into any building and wrap around a victim of any size. It is barely there at all, and a strong wind can blow it away.

How to pronounce Gastly

Gastly is pronounced GAST-lee. The capital letters show the stressed syllable.

Listen to Gastly said out loud:

In Japanese it is ゴース (Ghos).

Hear every other name on the Pokémon pronunciation guide.

Lore

Biology

Gastly is a black sphere wreathed in purple haze, with a wide pink mouth, two fangs and eyes ringed by visible eyelids. It is 1.3 m tall and weighs just 0.1 kg. The Ultra Moon Pokédex says its body is 95% poisonous gas and the other 5% is said to be the souls of those the gas has killed. It gives off a faint, sweet smell, and its gas can make people faint.

Behaviour

Gastly drifts into abandoned buildings, where a flickering light is said to be a sign it is nearby. Groups huddle under the eaves of houses to shelter from the wind. In the anime it is playful and likes to scare people. A sleeping Gastly floats, and is said to give a sudden surprise to anyone who comes close.

Habitat

The Pokédex habitat list puts Gastly in caves, and the Pokédex adds decrepit, deserted buildings. In Scarlet and Violet it lives in Paldea and, in The Teal Mask, Kitakami. In Legends: Z-A it appears across Lumiose City, and in the Mega Dimension DLC's Hyperspace Lumiose.

Powers

Its only Ability is Levitate. Gastly attacks with Lick, Night Shade, Shadow Ball and Dark Pulse, and Hypnosis sets up Dream Eater. With 100 base Special Attack and 80 Speed it hits hard and fast, but its 30 HP means almost anything can finish it.

Name origin

Gastly may combine 'gas', 'ghost' and 'ghastly', meaning frightful. The Japanese name is Ghos (ゴース), which may derive from 'ghost' and 'gas'.

Design inspiration

Ken Sugimori designed Gastly. Bulbapedia says it may draw on a cloud of poisonous gas and on hitodama or onibi, Japanese will-o'-the-wisp spirits. Its Poison type and extreme lightness could echo fuyūrei, floating spirits said to spread disease. These are fan readings.

Evolution notes

Gastly evolves into Haunter at level 25, and Haunter evolves into Gengar when traded.

In the games

Gastly's most notable game role is in the original Pokémon Pinball, where three of them open a bonus stage reached from the Red Table, followed by a pair of Haunter and then a Gengar. It is a Generation I original.

In the anime

Gastly debuted in 'The Ghost of Maiden's Peak', where a talking, shape-shifting one posed as the spirit of a legendary woman to toy with young men. Morty's Gastly beat Ash's Pikachu in 'From Ghost to Ghost' before Cyndaquil defeated it.

Fun facts

• In Generation I, Night Shade was Gastly's signature move.
• Bulbapedia says Gastly, Haunter, Flabébé, Cosmog, Kartana and Gimmighoul's Roaming Form are tied for the lightest of all Pokémon, at 0.1 kg.
• Outside the Let's Go games and Legends: Arceus, the Gastly line learns no Poison-type moves by levelling up, even though all three are part Poison.

Sources: Bulbapedia: Gastly (Pokémon) · Serebii: Gastly (Scarlet/Violet Pokédex)

Base stats

• HP: 30
• Attack: 35
• Defense: 30
• Sp. Atk: 100
• Sp. Def: 35
• Speed: 80

Gastly’s base stat total is 310. Its highest stat is Sp. Atk.

Type matchups

What is Gastly weak to?

Gastly takes extra damage from Ground (2×), Psychic (2×), Ghost (2×), Dark (2×) moves.

It resists Poison (¼×), Bug (¼×), Grass (½×), Fairy (½×).

It is immune to Normal, Fighting moves.

Evolution

How does Gastly evolve?

Gastly evolves into Haunter at level 25.

The whole family: Gastly, Haunter, Gengar.

• Haunter evolves into Gengar (Trade).

Abilities

• Levitate: Evades Ground moves.

Moves

Moves Gastly learns by level up in Scarlet / Violet

TM moves (48)

Gastly can learn 48 moves from TMs in Scarlet / Violet: Scary Face, Protect, Acid Spray, Confuse Ray, Thief, Facade, Hex, Icy Wind, Night Shade, Venoshock, Endure, Sunny Day, Rain Dance, Foul Play, Fire Punch, Thunder Punch, Ice Punch, Sleep Talk, Dazzling Gleam, Poison Jab, Rest, Taunt, Imprison, Dark Pulse, Skill Swap, Gunk Shot, Substitute, Will-O-Wisp, Trick, Giga Drain, Shadow Ball, Energy Ball, Psychic, Thunderbolt, Nasty Plot, Sludge Bomb, Trick Room, Thunder, Tera Blast, Haze, Toxic, Spite, Poltergeist, Pain Split, Psych Up, Sludge Wave, Skitter Smack, Curse.

Egg moves (8):Astonish, Clear Smog, Disable, Haze, Perish Song, Reflect Type, Smog, Toxic.

Breeding & training

• Gender: 50% male, 50% female.
• Egg groups: Amorphous.
• Egg cycles: 20 (steps to hatch, Scarlet/Violet: 2,560).
• Catch rate: 190 out of 255.
• Base friendship (Gen 8 onward): 50.
• Growth rate: Medium Slow (1,059,860 experience points to reach level 100).
• Defeating it gives 1 Sp. Atk effort value.
• Base experience yield: 62.

Pokédex entries

Gaseous and completely impalpable. Also highly dangerous— inhaling part of its poisonous body will cause one to faint instantly. (Legends: Arceus)

With its gas-like body, it can sneak into any place it desires. However, it can be blown away by wind. (Gold, HeartGold, Shield)

Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison. (Platinum, Black, White, Black 2, White 2, Y, Sword)

Said to appear in decrepit, deserted buildings. It has no real shape as it appears to be made of a gas. (Yellow, Let’s Go, Pikachu!, Let’s Go, Eevee!)

Poisonous gas comprises 95% of its body. It's said that the remaining 5% is made up of the souls of those who died from the gas. (Ultra Moon)

It's said that gas emanating from a graveyard was possessed by the grievances of the deceased and thus became a Pokémon. (Ultra Sun)

Names around the world

Trivia

• Lightest Poison type: 0.1 kg, shared with 1 other.
• Lightest Ghost type: 0.1 kg, shared with 1 other.
• Lightest Pokémon in Gen 1: 0.1 kg, shared with 1 other.
• Lightest Poison type in Gen 1: 0.1 kg, shared with 1 other.
• Lightest Ghost type in Gen 1: 0.1 kg, shared with 1 other.
• Shortest Ghost type in Gen 1: 1.3 m.
• Slowest Ghost type in Gen 1: 80 Speed.
• Lowest base stat total among Ghost types in Gen 1: 310.
• Taller than 64% of all Pokémon (1.3 m).
• Heavier than 0% of all Pokémon (0.1 kg).
• Base stat total 310, ranked #804 of 1,025.
• One of 4 Pokémon that are both Ghost and Poison.
• One of 87 purple Pokémon.
• Number 92 of 151 Pokémon introduced in Generation 1 (Kanto).
• Part of an evolution family of 3 Pokémon.
• Can learn 61 different moves in Scarlet / Violet.
• Catch rate 190: about 24.8% per Poké Ball at full health.
• Appears in 17 distinct Pokédex entries.

Sources and fact-checking

• Stats, types, abilities, moves, evolutions, forms and Pokédex entries: PokéAPI open game data.
• Lore: written by pokee.si in our own words, researched from Bulbapedia: Gastly (Pokémon), Serebii: Gastly (Scarlet/Violet Pokédex).
• Pronunciation (GAST-lee): it follows how the English anime, games or official videos say it.

Last checked: 19 October 2026. Every sentence of the lore was checked against Bulbapedia, Serebii and the game data.

Explore

Ghost-type Pokémon · Poison-type Pokémon · Ghost/Poison weaknesses and matchups · Kanto region guide · Levitate ability · Compare Gastly · Full Pokédex · Type chart · All moves

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Gen 1 Poison-type Pokémon · Gen 1 Pokémon list · Purple Pokémon list · Amorphous egg group · Pokémon that start with G

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