Gastly

ゴース

Goosu

Generation

Generation I

Pokédex

Index

Mountain Kalos

N/A

030

Evolves

From

None

Into

Haunter

Footprint

Cry

Gastly (Japanese: ゴース Goosu) is a Ghost/Poison-type Pokémon introduced in Generation I. It evolves into Haunter starting at level 25, which evolves into Gengar when traded.

Biology

Physiology

Gastly's appearance consists of a dark sphere (its "head") surrounded by light purple gas. Gastly has large, white eyes and a large mouth with a small pair of fangs.

Behavior

They capture prey by enveloping them in their poisonous gas, which can seep through skin and cause fainting. They may also immobilize prey with the paralyzing move Lick. Despite their poor reputation, though, Gastly are not blatantly malicious and do not “haunt” beings with the intent of harming them. Instead, they are mischievous pranksters who enjoy startling others. They rarely utilize their poisonous gases unless threatened, but are known to put victims to sleep with Hypnosis. Their pranks can be annoying at times, so it should be noted that oscillating fans are very effective at warding Gastly away because the Pokémon steer clear of strong winds. When Gastly are near, it is said the air will smell faintly sweet.

Characteristics

Due to having a body made of gas, Gastly can slip into any place it wants. However, Gastly's body will dwindle away when exposed to a strong wind. It can also render itself nearly invisible and approach enemies undetected, and can envelop said enemies, regardless of their size.

Habitat

Due to the fact that Gastly's body can be blown away by strong wind, they gather under the eaves of houses in order to escape it.

Game data

Locations

Locations
Version(s)	Area(s)	Rarity
Red and Blue	Pokemon Tower	Common
Yellow	Pokemon Tower	Common
Gold and Silver	Tin Tower, Sprout Tower	Common
Crystal	Route 31, 32, 36, Tin Tower, and Sprout Tower	Common
Ruby and Sapphire	Trade	None
FireRed and LeafGreen	Pokemon Tower	Common
Emerald	Trade	None
Diamond and Pearl	Route 209, Old Chateau, Lost Tower	Common
Platinum	Route 209, Old Chateau, Lost Tower, Eterna Forest	Common
HeartGold and SoulSilver	Tin Tower, Sprout Tower, Safari Zone	Common
Black and White	White Forest (White only)	Common
X and Y	Breed Haunter/Gengar	None
Omega Ruby and Alpha Sapphire	Trade	None
Let's Go, Pikachu! and Let's Go, Eevee!	Pokemon Tower	Common
Sword and Shield	Giant's Seat, Hammerlocke Hills, North Lake Miloch, Watchtower Ruins Max Raid Battle: Giant's Cap, Giant's Mirror, Hammerlocke Hills, Motostoke Riverbank, South Lake Miloch, Stony Wilderness, Watchtower Ruins	Common

Pokédex entries

Red and Blue
Almost invisible, this gaseous Pokémon cloaks the target and puts it to sleep without notice.
Yellow
Said to appear in decrepit, deserted buildings. It has no real shape as it appears to be made of a gas.
Gold
With its gas-like body, it can sneak into any place it desires. However, it can be blown away by wind.
Silver
Its thin body is made of gas. It can envelop an opponent of any size and cause suffocation.
Crystal
It wraps its opponent in its gas-like body, slowly weakening its prey by poisoning it through the skin.
Ruby
Gastly is largely composed of gaseous matter. When exposed to a strong wind, the gaseous body quickly dwindles away. Groups of this Pokémon cluster under the eaves of houses to escape the ravages of wind.
Sapphire
Gastly is largely composed of gaseous matter. When exposed to a strong wind, the gaseous body quickly dwindles away. Groups of this Pokémon cluster under the eaves of houses to escape the ravages of wind.
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.
Emerald
When exposed to a strong wind, a Gastly's gaseous body quickly dwindles away. They cluster under the eaves of houses to escape the ravages of wind.
Diamond
This Pokémon's body is 95% made up of gases, which are blown away by strong gusts of wind.
Pearl
A Pokémon born from poison gases. It defeats even the largest foes by enveloping them in gas.
Platinum
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
HeartGold
With its gas-like body, it can sneak into any place it desires. However, it can be blown away by wind.
SoulSilver
Its thin body is made of gas. It can envelop an opponent of any size and cause suffocation.
Black
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
White
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
Black 2
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
White 2
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
X
Its body is made of gas. Despite lacking substance, it can envelop an opponent of any size and cause suffocation.
Y
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
Omega Ruby
Gastly is largely composed of gaseous matter. When exposed to a strong wind, the gaseous body quickly dwindles away. Groups of this Pokémon cluster under the eaves of houses to escape the ravages of wind.
Alpha Sapphire
Gastly is largely composed of gaseous matter. When exposed to a strong wind, the gaseous body quickly dwindles away. Groups of this Pokémon cluster under the eaves of houses to escape the ravages of wind.
Sun
Should a strange light be seen flickering in an abandoned building. Gastly is lurking there.
Moon
Although Gastly is barely visible, when it's near, a faint sweet smell lingers.
Ultra Sun
It’s said that gas emanating from a graveyard was possessed by the grievances of the deceased and thus became a Pokémon.
Ultra Moon
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.
Let's Go, Pikachu!
Said to appear in decrepit, deserted buildings. It has no real shape, as it appears to be made of a gas.
Let's Go, Eevee!
Said to appear in decrepit, deserted buildings. It has no real shape, as it appears to be made of a gas.
Sword
Born from gases, anyone would faint if engulfed by its gaseous body, which contains poison.
Shield
With its gas-like body, it can sneak into any place it desires. However, it can be blown away by wind.

Base stats

Gastly's Stats
HP	30
Attack	35
Defense	30
Sp. Atk	100
Sp. Def	35
Speed	80
Total	310

Learnset

Leveling

LevelingGeneration VII
Level	Move	Power	Accuracy	PP	Type	Category
1	Hypnosis	—	60%	20	Psychic	Status
1	Lick	30	100%	30	Ghost	Physical
5	Spite	—	100%	10	Ghost	Status
8	Mean Look	—	—%	5	Normal	Status
12	Curse	—	—%	10	Ghost	Status
15	Night Shade	—	100%	15	Ghost	Special
19	Confuse Ray	—	100%	10	Ghost	Status
22	Sucker Punch	70	100%	5	Dark	Physical
26	Payback	50	100%	10	Dark	Physical
29	Shadow Ball	80	100%	15	Ghost	Special
33	Dream Eater	100	100%	15	Psychic	Special
36	Dark Pulse	80	100%	15	Dark	Special
40	Destiny Bond	—	—%	5	Ghost	Status
43	Hex	65	100%	10	Ghost	Special
47	Nightmare	—	100%	15	Ghost	Status
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

LevelingGeneration VI
Level	Move	Power	Accuracy	PP	Type	Category	Contest Category	Appeal	Jam
1	Hypnosis	—	60%	20	Psychic	Status		1 ♥	3 ♥
1	Lick	30	100%	30	Ghost	Physical		2 ♥	3 ♥
5	Spite	—	100%	10	Ghost	Status		2 ♥	1 ♥
8	Mean Look	—	—%	5	Normal	Status		2 ♥	0 ♥
12	Curse	—	—%	10	Ghost	Status		3 ♥	0 ♥
15	Night Shade	—	100%	15	Ghost	Special		3 ♥	0 ♥
19	Confuse Ray	—	100%	10	Ghost	Status		2 ♥	0 ♥
22	Sucker Punch	80	100%	5	Dark	Physical		3 ♥	0 ♥
26	Payback	50	100%	10	Dark	Physical		2 ♥	0 ♥
29	Shadow Ball	80	100%	15	Ghost	Special		4 ♥	0 ♥
33	Dream Eater	100	100%	15	Psychic	Special		2 ♥	0 ♥
36	Dark Pulse	80	100%	15	Dark	Special		4 ♥	0 ♥
40	Destiny Bond	—	—%	5	Ghost	Status		7 ♥	0 ♥
43	Hex	65	100%	10	Ghost	Special		2 ♥	1 ♥
47	Nightmare	—	100%	15	Ghost	Status		1 ♥	3 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

LevelingGeneration V
Level	Move	Power	Accuracy	PP	Type	Category
1	Hypnosis	—	60%	20	Psychic	Status
1	Lick	30	100%	30	Ghost	Physical
5	Spite	—	100%	10	Ghost	Status
8	Mean Look	—	—%	5	Normal	Status
12	Curse	—	—%	10	Ghost	Status
15	Night Shade	—	100%	15	Ghost	Special
19	Confuse Ray	—	100%	10	Ghost	Status
22	Sucker Punch	80	100%	5	Dark	Physical
26	Payback	50	100%	10	Dark	Physical
29	Shadow Ball	80	100%	15	Ghost	Special
33	Dream Eater	100	100%	15	Psychic	Special
36	Dark Pulse	80	100%	15	Dark	Special
40	Destiny Bond	—	—%	5	Ghost	Status
43	Hex	65	100%	10	Ghost	Special
47	Nightmare	—	100%	15	Ghost	Status
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

LevelingGeneration IV
Level	Move	Power	Accuracy	PP	Type	Category	Contest Category	Appeal
1	Hypnosis	—	60%	20	Psychic	Status		2 ♥
1	Lick	30	100%	30	Ghost	Physical		0 ♥
5	Spite	—	100%	10	Ghost	Status		2 ♥
8	Mean Look	—	—%	5	Normal	Status		2 ♥
12	Curse	—	—%	10	Ghost	Status		0 ♥
15	Night Shade	—	100%	15	Ghost	Special		3 ♥
19	Confuse Ray	—	100%	10	Ghost	Status		2 ♥
22	Sucker Punch	80	100%	5	Dark	Physical		2 ♥
26	Payback	50	100%	10	Dark	Physical		1 ♥
29	Shadow Ball	80	100%	15	Ghost	Special		2 ♥
33	Dream Eater	100	100%	15	Psychic	Special		1 ♥
36	Dark Pulse	80	100%	15	Dark	Special		2 ♥
40	Destiny Bond	—	—%	5	Ghost	Status		0 ♥
43	Nightmare	—	100%	15	Ghost	Status		2 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

LevelingGeneration III
Level	Move	Power	Accuracy	PP	Type	Contest Category	Appeal	Jam
1	Hypnosis	—	60%	20	Psychic		1 ♥	3 ♥
1	Lick	30	100%	30	Ghost		1 ♥	4 ♥
8	Spite	—	100%	10	Ghost		2 ♥	0 ♥
13	Mean Look	—	—%	5	Normal		2 ♥	0 ♥
16	Curse	—	—%	10	Ghost		3 ♥	0 ♥
21	Night Shade	—	100%	15	Ghost		2 ♥	1 ♥
28	Confuse Ray	—	100%	10	Ghost		3 ♥	0 ♥
33	Dream Eater	100	100%	15	Psychic		2 ♥	2 ♥
36	Destiny Bond	—	—%	5	Ghost		8 ♥	0 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

LevelingGeneration II
Level	Move	Power	Accuracy	PP	Type
1	Lick	30	100%	30	Ghost
8	Spite	—	100%	10	Ghost
13	Mean Look	—	—%	5	Normal
16	Curse	—	—%	10	Ghost
21	Night Shade	—	100%	15	Ghost
28	Confuse Ray	—	100%	10	Ghost
33	Dream Eater	100	100%	15	Psychic
36	Destiny Bond	—	—%	5	Ghost
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

LevelingGeneration I
Level	Move	Power	Accuracy	PP	Type
1	Lick	30	100%	30	Ghost
1	Night Shade	—	100%	15	Ghost
1	Confuse Ray	—	100%	10	Ghost
27	Hypnosis	—	60%	20	Psychic
35	Dream Eater	100	100%	15	Psychic
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TM/HM

TMs, TRs, and HMs Generation VII
TM/HM/TR	Move	Power	Accuracy	PP	Type	Cat.
TM06	Toxic	—	90%	10	Poison	Status
TM09	Venoshock	65	100%	10	Poison	Special
TM10	Hidden Power	60	100%	15	Normal	Special
TM11	Sunny Day	—	—%	5	Fire	Status
TM12	Taunt	—	100%	20	Dark	Status
TM17	Protect	—	—%	10	Normal	Status
TM18	Rain Dance	—	—%	5	Water	Status
TM21	Frustration	—	100%	20	Normal	Physical
TM24	Thunderbolt	90	100%	15	Electric	Special
TM27	Return	—	100%	20	Normal	Physical
TM29	Psychic	90	100%	10	Psychic	Special
TM30	Shadow Ball	80	100%	15	Ghost	Special
TM32	Double Team	—	—%	15	Normal	Status
TM36	Sludge Bomb	90	100%	10	Poison	Special
TM41	Torment	—	100%	15	Dark	Status
TM42	Facade	70	100%	20	Normal	Physical
TM44	Rest	—	—%	10	Psychic	Status
TM45	Attract	—	100%	15	Normal	Status
TM46	Thief	60	100%	25	Dark	Physical
TM48	Round	60	100%	15	Normal	Special
TM53	Energy Ball	90	100%	10	Grass	Special
TM61	Will-O-Wisp	—	85%	15	Fire	Status
TM63	Embargo	—	100%	15	Dark	Status
TM64	Explosion	250	100%	5	Normal	Physical
TM66	Payback	50	100%	10	Dark	Physical
TM77	Psych Up	—	—%	10	Normal	Status
TM83	Infestation	20	100%	20	Bug	Special
TM85	Dream Eater	100	100%	15	Psychic	Special
TM87	Swagger	—	85%	15	Normal	Status
TM88	Sleep Talk	—	—%	10	Normal	Status
TM90	Substitute	—	—%	10	Normal	Status
TM92	Trick Room	—	—%	5	Psychic	Status
TM97	Dark Pulse	80	100%	15	Dark	Special
TM99	Dazzling Gleam	80	100%	10	Fairy	Special
TM100	Confide	—	—%	20	Normal	Status
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TMs, TRs, and HMs Generation VI
TM/HM/TR	Move	Power	Accuracy	PP	Type	Cat.	Contest Cat.	Appeal	Jam
TM06	Toxic	—	90%	10	Poison	Status		3 ♥	0 ♥
TM09	Venoshock	65	100%	10	Poison	Special		2 ♥	0 ♥
TM10	Hidden Power	60	100%	15	Normal	Special		3 ♥	0 ♥
TM11	Sunny Day	—	—%	5	Fire	Status		1 ♥	0 ♥
TM12	Taunt	—	100%	20	Dark	Status		2 ♥	1 ♥
TM17	Protect	—	—%	10	Normal	Status		2 ♥	0 ♥
TM18	Rain Dance	—	—%	5	Water	Status		1 ♥	0 ♥
TM21	Frustration	—	100%	20	Normal	Physical		2 ♥	3 ♥
TM24	Thunderbolt	90	100%	15	Electric	Special		4 ♥	0 ♥
TM27	Return	—	100%	20	Normal	Physical		4 ♥	0 ♥
TM29	Psychic	90	100%	10	Psychic	Special		4 ♥	0 ♥
TM30	Shadow Ball	80	100%	15	Ghost	Special		4 ♥	0 ♥
TM32	Double Team	—	—%	15	Normal	Status		1 ♥	0 ♥
TM36	Sludge Bomb	90	100%	10	Poison	Special		2 ♥	1 ♥
TM41	Torment	—	100%	15	Dark	Status		2 ♥	0 ♥
TM42	Facade	70	100%	20	Normal	Physical		2 ♥	0 ♥
TM44	Rest	—	—%	10	Psychic	Status		1 ♥	0 ♥
TM45	Attract	—	100%	15	Normal	Status		2 ♥	0 ♥
TM46	Thief	60	100%	25	Dark	Physical		1 ♥	0 ♥
TM48	Round	60	100%	15	Normal	Special		2 ♥	0 ♥
TM53	Energy Ball	90	100%	10	Grass	Special		4 ♥	0 ♥
TM61	Will-O-Wisp	—	85%	15	Fire	Status		3 ♥	0 ♥
TM63	Embargo	—	100%	15	Dark	Status		3 ♥	0 ♥
TM64	Explosion	250	100%	5	Normal	Physical		8 ♥	0 ♥
TM66	Payback	50	100%	10	Dark	Physical		2 ♥	0 ♥
TM77	Psych Up	—	—%	10	Normal	Status		2 ♥	0 ♥
TM83	Infestation	20	100%	20	Bug	Special		3 ♥	0 ♥
TM85	Dream Eater	100	100%	15	Psychic	Special		2 ♥	0 ♥
TM87	Swagger	—	90%	15	Normal	Status		3 ♥	0 ♥
TM88	Sleep Talk	—	—%	10	Normal	Status		1 ♥	0 ♥
TM90	Substitute	—	—%	10	Normal	Status		2 ♥	0 ♥
TM92	Trick Room	—	—%	5	Psychic	Status		3 ♥	0 ♥
TM94	Secret Power^ORAS	70	100%	20	Normal	Physical		1 ♥	0 ♥
TM97	Dark Pulse	80	100%	15	Dark	Special		4 ♥	0 ♥
TM99	Dazzling Gleam	80	100%	10	Fairy	Special		4 ♥	0 ♥
TM100	Confide	—	—%	20	Normal	Status		3 ♥	0 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TMs, TRs, and HMs Generation V
TM/HM/TR	Move	Power	Accuracy	PP	Type	Cat.
TM06	Toxic	—	90%	10	Poison	Status
TM09	Venoshock	65	100%	10	Poison	Special
TM10	Hidden Power	—	100%	15	Normal	Special
TM11	Sunny Day	—	—%	5	Fire	Status
TM12	Taunt	—	100%	20	Dark	Status
TM17	Protect	—	—%	10	Normal	Status
TM18	Rain Dance	—	—%	5	Water	Status
TM19	Telekinesis	—	—%	15	Psychic	Status
TM21	Frustration	—	100%	20	Normal	Physical
TM24	Thunderbolt	95	100%	15	Electric	Special
TM27	Return	—	100%	20	Normal	Physical
TM29	Psychic	90	100%	10	Psychic	Special
TM30	Shadow Ball	80	100%	15	Ghost	Special
TM32	Double Team	—	—%	15	Normal	Status
TM36	Sludge Bomb	90	100%	10	Poison	Special
TM41	Torment	—	100%	15	Dark	Status
TM42	Facade	70	100%	20	Normal	Physical
TM44	Rest	—	—%	10	Psychic	Status
TM45	Attract	—	100%	15	Normal	Status
TM46	Thief	40	100%	10	Dark	Physical
TM48	Round	60	100%	15	Normal	Special
TM53	Energy Ball	80	100%	10	Grass	Special
TM61	Will-O-Wisp	—	75%	15	Fire	Status
TM63	Embargo	—	100%	15	Dark	Status
TM64	Explosion	250	100%	5	Normal	Physical
TM66	Payback	50	100%	10	Dark	Physical
TM77	Psych Up	—	—%	10	Normal	Status
TM85	Dream Eater	100	100%	15	Psychic	Special
TM87	Swagger	—	90%	15	Normal	Status
TM90	Substitute	—	—%	10	Normal	Status
TM92	Trick Room	—	—%	5	Psychic	Status
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TMs, TRs, and HMs Generation IV
TM/HM/TR	Move	Power	Accuracy	PP	Type	Cat.	Contest Cat.	Appeal
TM06	Toxic	—	85%	10	Poison	Status		2 ♥
TM10	Hidden Power	—	100%	15	Normal	Special		1 ♥
TM11	Sunny Day	—	—%	5	Fire	Status		2 ♥
TM12	Taunt	—	100%	20	Dark	Status		0 ♥
TM17	Protect	—	—%	10	Normal	Status		0 ♥
TM18	Rain Dance	—	—%	5	Water	Status		2 ♥
TM19	Giga Drain	60	100%	10	Grass	Special		1 ♥
TM21	Frustration	—	100%	20	Normal	Physical		2 ♥
TM24	Thunderbolt	95	100%	15	Electric	Special		2 ♥
TM27	Return	—	100%	20	Normal	Physical		2 ♥
TM29	Psychic	90	100%	10	Psychic	Special		2 ♥
TM30	Shadow Ball	80	100%	15	Ghost	Special		2 ♥
TM32	Double Team	—	—%	15	Normal	Status		2 ♥
TM36	Sludge Bomb	90	100%	10	Poison	Special		2 ♥
TM41	Torment	—	100%	15	Dark	Status		0 ♥
TM42	Facade	70	100%	20	Normal	Physical		2 ♥
TM43	Secret Power	70	100%	20	Normal	Physical		2 ♥
TM44	Rest	—	—%	10	Psychic	Status		0 ♥
TM45	Attract	—	100%	15	Normal	Status		2 ♥
TM46	Thief	40	100%	10	Dark	Physical		0 ♥
TM48	Skill Swap	—	—%	10	Psychic	Status		0 ♥
TM49	Snatch	—	—%	10	Dark	Status		0 ♥
TM53	Energy Ball	80	100%	10	Grass	Special		2 ♥
TM58	Endure	—	—%	10	Normal	Status		2 ♥
TM61	Will-O-Wisp	—	75%	15	Fire	Status		2 ♥
TM63	Embargo	—	100%	15	Dark	Status		2 ♥
TM64	Explosion	250	100%	5	Normal	Physical		0 ♥
TM66	Payback	50	100%	10	Dark	Physical		1 ♥
TM77	Psych Up	—	—%	10	Normal	Status		0 ♥
TM78	Captivate	—	100%	20	Normal	Status		2 ♥
TM79	Dark Pulse	80	100%	15	Dark	Special		2 ♥
TM82	Sleep Talk	—	—%	10	Normal	Status		3 ♥
TM83	Natural Gift	—	100%	15	Normal	Physical		2 ♥
TM85	Dream Eater	100	100%	15	Psychic	Special		1 ♥
TM87	Swagger	—	90%	15	Normal	Status		2 ♥
TM90	Substitute	—	—%	10	Normal	Status		1 ♥
TM92	Trick Room	—	—%	5	Psychic	Status		2 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TMs, TRs, and HMs Generation III
TM/HM/TR	Move	Power	Accuracy	PP	Type	Contest Cat.	Appeal	Jam
TM06	Toxic	—	85%	10	Poison		3 ♥	0 ♥
TM10	Hidden Power	—	100%	15	Normal		3 ♥	0 ♥
TM11	Sunny Day	—	—%	5	Fire		1 ♥	0 ♥
TM12	Taunt	—	100%	20	Dark		2 ♥	0 ♥
TM17	Protect	—	—%	10	Normal		1 ♥	0 ♥
TM18	Rain Dance	—	—%	5	Water		1 ♥	0 ♥
TM19	Giga Drain	60	100%	5	Grass		2 ♥	1 ♥
TM21	Frustration	—	100%	20	Normal		1 ♥	0 ♥
TM24	Thunderbolt	95	100%	15	Electric		4 ♥	0 ♥
TM27	Return	—	100%	20	Normal		1 ♥	0 ♥
TM29	Psychic	90	100%	10	Psychic		1 ♥	3 ♥
TM30	Shadow Ball	80	100%	15	Ghost		3 ♥	0 ♥
TM32	Double Team	—	—%	15	Normal		2 ♥	0 ♥
TM36	Sludge Bomb	90	100%	10	Poison		2 ♥	1 ♥
TM41	Torment	—	100%	15	Dark		2 ♥	0 ♥
TM42	Facade	70	100%	20	Normal		2 ♥	0 ♥
TM43	Secret Power	70	100%	20	Normal		1 ♥	0 ♥
TM44	Rest	—	—%	10	Psychic		2 ♥	0 ♥
TM45	Attract	—	100%	15	Normal		2 ♥	0 ♥
TM46	Thief	40	100%	10	Dark		1 ♥	0 ♥
TM48	Skill Swap	—	—%	10	Psychic		1 ♥	0 ♥
TM49	Snatch	—	—%	10	Dark		2 ♥	1 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TMs, TRs, and HMs Generation II
TM/HM/TR	Move	Power	Accuracy	PP	Type
TM03	Curse	—	—%	10	???
TM06	Toxic	—	85%	10	Poison
TM07	Zap Cannon	100	50%	5	Electric
TM09	Psych Up	—	—%	10	Normal
TM10	Hidden Power	—	100%	15	Normal
TM11	Sunny Day	—	—%	5	Fire
TM13	Snore	40	100%	15	Normal
TM17	Protect	—	—%	10	Normal
TM18	Rain Dance	—	—%	5	Water
TM19	Giga Drain	60	100%	5	Grass
TM20	Endure	—	—%	10	Normal
TM21	Frustration	—	100%	20	Normal
TM25	Thunder	120	70%	10	Electric
TM27	Return	—	100%	20	Normal
TM29	Psychic	90	100%	10	Psychic
TM30	Shadow Ball	80	100%	15	Ghost
TM32	Double Team	—	—%	15	Normal
TM34	Swagger	—	90%	15	Normal
TM35	Sleep Talk	—	—%	10	Normal
TM42	Dream Eater	100	100%	15	Psychic
TM44	Rest	—	—%	10	Psychic
TM45	Attract	—	100%	15	Normal
TM46	Thief	40	100%	10	Dark
TM50	Nightmare	—	100%	15	Ghost
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

TMs, TRs, and HMs Generation I
TM/HM/TR	Move	Power	Accuracy	PP	Type
TM06	Toxic	—	85%	10	Poison
TM20	Rage	20	100%	20	Normal
TM21	Mega Drain	40	100%	10	Grass
TM24	Thunderbolt	95	100%	15	Electric
TM25	Thunder	120	70%	10	Electric
TM29	Psychic	90	100%	10	Psychic
TM31	Mimic	—	—%	10	Normal
TM32	Double Team	—	—%	15	Normal
TM34	Bide	—	—%	10	Normal
TM36	Selfdestruct	130	100%	5	Normal
TM42	Dream Eater	100	100%	15	Psychic
TM44	Rest	—	—%	10	Psychic
TM46	Psywave	—	80%	15	Psychic
TM47	Explosion	170	100%	5	Normal
TM50	Substitute	—	—%	10	Normal
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Breeding

Breeding Generation VII
Move	Father	Power	Accuracy	PP	Type	Category
Astonish	Misdreavus, Mismagius, Duskull, Dusclops, Dusknoir, Chimecho, Drifloon, Drifblim, Yamask, Cofagrigus, Litwick, Lampent, Phantump, Trevenant, Pumpkaboo, Gourgeist, Sandygast, Palossand, Mimikyu	30	100%	15	Ghost	Physical
Clear Smog	Koffing, Weezing, Slugma, Magcargo	50	—%	15	Poison	Special
Disable	Grimer, Grimer, Muk, Muk, Duskull, Dusclops, Dusknoir, Yamask, Cofagrigus	—	100%	20	Normal	Status
Fire Punch	Dusclops, Dusknoir	75	100%	15	Fire	Physical
Grudge	Misdreavus, Shuppet, Banette, Yamask, Cofagrigus	—	—%	5	Ghost	Status
Haze	Koffing, Weezing, Yamask, Cofagrigus	—	—%	30	Ice	Status
Ice Punch	Dusclops, Dusknoir	75	100%	15	Ice	Physical
Perish Song	Misdreavus	—	—%	5	Normal	Status
Psywave	Misdreavus, Mismagius, Chimecho, Solosis, Duosion, Reuniclus	—	100%	15	Psychic	Special
Reflect Type *	Castform, Stunfisk	—	—%	15	Normal	Status
Scary Face	Cofagrigus, Pumpkaboo, Gourgeist	—	100%	10	Normal	Status
Smog	Koffing, Weezing, Slugma, Magcargo, Litwick, Lampent, Chandelure	30	70%	20	Poison	Special
Thunder Punch	Dusclops, Dusknoir	75	100%	15	Electric	Physical
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move. * indicates this move requires chain breeding. ◊ indicates the father must learn this move in a previous generation. ♈ indicates the father must learn this move via a TM.

Breeding Generation VI
Move	Father	Power	Accuracy	PP	Type	Category	Contest Category	Appeal	Jam
Astonish	Misdreavus, Mismagius, Duskull, Dusclops, Dusknoir, Chimecho, Drifloon, Drifblim, Yamask, Cofagrigus, Litwick, Lampent, Chandelure, Phantump, Trevenant, Pumpkaboo, Gourgeist	30	100%	15	Ghost	Physical		2 ♥	3 ♥
Clear Smog	Koffing, Weezing, Slugma, Magcargo	50	—%	15	Poison	Special		2 ♥	0 ♥
Disable	Grimer, Muk, Duskull, Dusclops, Dusknoir, Yamask, Cofagrigus	—	100%	20	Normal	Status		2 ♥	0 ♥
Fire Punch	Dusclops, Dusknoir	75	100%	15	Fire	Physical		4 ♥	0 ♥
Grudge	Misdreavus, Shuppet, Banette, Yamask, Cofagrigus	—	—%	5	Ghost	Status		4 ♥	4 ♥
Haze	Koffing, Weezing, Yamask, Cofagrigus	—	—%	30	Ice	Status		3 ♥	0 ♥
Ice Punch	Dusclops, Dusknoir	75	100%	15	Ice	Physical		4 ♥	0 ♥
Perish Song	Misdreavus	—	—%	5	Normal	Status		4 ♥	0 ♥
Psywave	Misdreavus, Mismagius, Chimecho, Solosis, Duosion, Reuniclus	—	100%	15	Psychic	Special		1 ♥	0 ♥
Reflect Type *	Stunfisk	—	—%	15	Normal	Status		2 ♥	0 ♥
Scary Face	Cofagrigus, Pumpkaboo, Gourgeist	—	100%	10	Normal	Status		3 ♥	0 ♥
Smog	Koffing, Weezing, Slugma, Magcargo, Litwick, Lampent, Chandelure	30	70%	20	Poison	Special		4 ♥	0 ♥
Thunder Punch	Dusclops, Dusknoir	75	100%	15	Electric	Physical		4 ♥	0 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move. * indicates this move requires chain breeding. ◊ indicates the father must learn this move in a previous generation. ♈ indicates the father must learn this move via a TM.

Breeding Generation V
Move	Father	Power	Accuracy	PP	Type	Category
Astonish	Misdreavus, Mismagius, Duskull, Dusclops, Dusknoir, Chimecho, Drifloon, Drifblim, Yamask, Cofagrigus, Litwick, Lampent, Chandelure	30	100%	15	Ghost	Physical
Clear Smog	Koffing, Weezing	50	—%	15	Poison	Special
Disable	Grimer, Muk, Duskull, Dusclops, Dusknoir, Yamask, Cofagrigus	—	100%	20	Normal	Status
Fire Punch	Dusclops, Dusknoir	75	100%	15	Fire	Physical
Grudge	Misdreavus, Mismagius, Shuppet, Banette, Yamask, Cofagrigus	—	—%	5	Ghost	Status
Haze	Koffing, Weezing, Yamask, Cofagrigus	—	—%	30	Ice	Status
Ice Punch	Dusclops, Dusknoir	75	100%	15	Ice	Physical
Perish Song	Misdreavus, Mismagius	—	—%	5	Normal	Status
Psywave	Misdreavus, Mismagius, Chimecho, Solosis, Duosion, Reuniclus	—	80%	15	Psychic	Special
Scary Face	Cofagrigus	—	100%	10	Normal	Status
Smog	Koffing, Weezing, Slugma, Magcargo, Litwick, Lampent, Chandelure	20	70%	20	Poison	Special
ThunderPunch	Dusclops, Dusknoir	75	100%	15	Electric	Physical
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move. * indicates this move requires chain breeding. ◊ indicates the father must learn this move in a previous generation. ♈ indicates the father must learn this move via a TM.

Breeding Generation IV
Move	Father	Power	Accuracy	PP	Type	Category	Contest Category	Appeal
Astonish	Misdreavus, Mismagius, Duskull, Dusclops, Dusknoir, Chimecho, Drifloon, Drifblim	30	100%	15	Ghost	Physical		3 ♥
DisableHGSS	Grimer, Muk, Duskull, Dusclops, Dusknoir	—	80%	20	Normal	Status		2 ♥
Explosion	Koffing, Weezing, Drifloon, Drifblim	250	100%	5	Normal	Physical		0 ♥
Fire Punch	Dusclops, Dusknoir	75	100%	15	Fire	Physical		2 ♥
Grudge	Misdreavus, Mismagius, Shuppet, Banette	—	—%	5	Ghost	Status		2 ♥
Haze	Koffing, Weezing	—	—%	30	Ice	Status		2 ♥
Ice Punch	Dusclops, Dusknoir	75	100%	15	Ice	Physical		2 ♥
Perish Song	Misdreavus, Mismagius	—	—%	5	Normal	Status		2 ♥
Psywave	Misdreavus, Mismagius, Chimecho	—	80%	15	Psychic	Special		3 ♥
ThunderPunch	Dusclops, Dusknoir	75	100%	15	Electric	Physical		2 ♥
Will-O-Wisp	Shuppet, Banette, Duskull, Dusclops, Dusknoir	—	75%	15	Fire	Status		2 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move. * indicates this move requires chain breeding. ◊ indicates the father must learn this move in a previous generation. ♈ indicates the father must learn this move via a TM.

Breeding Generation III
Move	Father	Power	Accuracy	PP	Type	Contest Category	Appeal	Jam
Astonish	Misdreavus, Duskull, Dusclops, Chimecho	30	100%	15	Ghost		2 ♥	3 ♥
Explosion	Koffing, Weezing	250	100%	5	Normal		8 ♥	0 ♥
Grudge	Misdreavus, Shuppet, Banette	—	—%	5	Ghost		1 ♥	0 ♥
Haze	Koffing, Weezing	—	—%	30	Ice		3 ♥	0 ♥
Perish Song	Misdreavus	—	—%	5	Normal		2 ♥	1 ♥
Psywave	Misdreavus, Chimecho	—	80%	15	Psychic		2 ♥	1 ♥
Will-O-Wisp	Shuppet, Banette, Duskull, Dusclops	—	75%	15	Fire		1 ♥	4 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move. * indicates this move requires chain breeding. ◊ indicates the father must learn this move in a previous generation. ♈ indicates the father must learn this move via a TM.

Breeding Generation II
Move	Father	Power	Accuracy	PP	Type
Haze	Koffing, Weezing	—	—%	30	Ice
Perish Song	Misdreavus	—	—%	5	Normal
Psywave	Misdreavus	—	80%	15	Psychic
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move. * indicates this move requires chain breeding. ◊ indicates the father must learn this move in a previous generation. ♈ indicates the father must learn this move via a TM.

Tutoring

Tutoring Generation VII
Move	Power	Accuracy	PP	Type	Category
Ally Switch ^USUM	—	—%	15	Psychic	Status
Fire Punch ^USUM	75	100%	15	Fire	Physical
Foul Play ^USUM	95	100%	15	Dark	Physical
Giga Drain ^USUM	75	100%	10	Grass	Special
Ice Punch ^USUM	75	100%	15	Ice	Physical
Icy Wind ^USUM	55	95%	15	Ice	Special
Knock Off ^USUM	65	100%	20	Dark	Physical
Pain Split ^USUM	—	—%	20	Normal	Status
Skill Swap ^USUM	—	—%	10	Psychic	Status
Snatch ^USUM	—	—%	10	Dark	Status
Snore ^USUM	50	100%	15	Normal	Special
Spite ^USUM	—	100%	10	Ghost	Status
Telekinesis ^USUM	—	—%	15	Psychic	Status
Thunder Punch ^USUM	75	100%	15	Electric	Physical
Trick ^USUM	—	100%	10	Psychic	Status
Uproar ^USUM	90	100%	10	Normal	Special
Wonder Room ^USUM	—	—%	10	Psychic	Status
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Tutoring Generation VI
Move	Power	Accuracy	PP	Type	Category	Contest Category	Appeal	Jam
Fire Punch ^ORAS	75	100%	15	Fire	Physical		4 ♥	0 ♥
Foul Play ^ORAS	95	100%	15	Dark	Physical		1 ♥	0 ♥
Giga Drain ^ORAS	75	100%	10	Grass	Special		1 ♥	4 ♥
Ice Punch ^ORAS	75	100%	15	Ice	Physical		4 ♥	0 ♥
Icy Wind ^ORAS	55	95%	15	Ice	Special		4 ♥	0 ♥
Knock Off ^ORAS	65	100%	25	Dark	Physical		2 ♥	3 ♥
Pain Split ^ORAS	—	—%	20	Normal	Status		1 ♥	0 ♥
Skill Swap ^ORAS	—	—%	10	Psychic	Status		1 ♥	0 ♥
Snatch ^ORAS	—	—%	10	Dark	Status		1 ♥	0 ♥
Snore ^ORAS	50	100%	15	Normal	Special		4 ♥	0 ♥
Spite ^ORAS	—	100%	10	Ghost	Status		2 ♥	1 ♥
Thunder Punch ^ORAS	75	100%	15	Electric	Physical		4 ♥	0 ♥
Trick ^ORAS	—	100%	10	Psychic	Status		2 ♥	1 ♥
Uproar ^ORAS	90	100%	10	Normal	Special		2 ♥	1 ♥
Wonder Room ^ORAS	—	—%	10	Psychic	Status		3 ♥	0 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Tutoring Generation V
Move	Power	Accuracy	PP	Type	Category
Dark Pulse	80	100%	15	Dark	Special
Fire Punch	75	100%	15	Fire	Physical
Foul Play	95	100%	15	Dark	Physical
Giga Drain	75	100%	10	Grass	Special
Ice Punch	75	100%	15	Ice	Physical
Icy Wind	55	95%	15	Ice	Special
Knock Off	20	100%	20	Dark	Physical
Pain Split	—	—%	20	Normal	Status
Skill Swap	—	—%	10	Psychic	Status
Sleep Talk	—	—%	10	Normal	Status
Snatch	—	—%	10	Dark	Status
Snore	40	100%	15	Normal	Special
Spite	—	100%	10	Ghost	Status
ThunderPunch	75	100%	15	Electric	Physical
Trick	—	100%	10	Psychic	Status
Uproar	90	100%	10	Normal	Special
Wonder Room	—	—%	10	Psychic	Status
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Tutoring Generation IV
Move	Power	Accuracy	PP	Type	Category	Contest Category	Appeal
Fire Punch ^HGSSPt	75	100%	15	Fire	Physical		2 ♥
Ice Punch ^HGSSPt	75	100%	15	Ice	Physical		2 ♥
Icy Wind ^HGSSPt	55	95%	15	Ice	Special		2 ♥
Knock Off ^HGSSPt	20	100%	20	Dark	Physical		3 ♥
Ominous Wind ^HGSSPt	60	100%	5	Ghost	Special		0 ♥
Pain Split ^HGSS	—	—%	20	Normal	Status		2 ♥
Snore ^HGSSPt	40	100%	15	Normal	Special		3 ♥
Spite ^HGSSPt	—	100%	10	Ghost	Status		2 ♥
Sucker Punch ^HGSSPt	80	100%	5	Dark	Physical		2 ♥
ThunderPunch ^HGSSPt	75	100%	15	Electric	Physical		2 ♥
Trick ^HGSSPt	—	100%	10	Psychic	Status		0 ♥
Uproar ^HGSSPt	50	100%	10	Normal	Special		2 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Tutoring Generation III
Move	Power	Accuracy	PP	Type	Contest Category	Appeal	Jam
Dream Eater ^FRLGEXD	100	100%	15	Psychic		2 ♥	2 ♥
Endure ^E	—	—%	10	Normal		2 ♥	0 ♥
Explosion ^FRLGE	250	100%	5	Normal		8 ♥	0 ♥
Mimic ^FRLGEXD	—	—%	10	Normal		1 ♥	0 ♥
Nightmare ^XD	—	100%	15	Ghost		1 ♥	3 ♥
Psych Up ^E	—	—%	10	Normal		2 ♥	0 ♥
Selfdestruct ^XD	200	100%	5	Normal		8 ♥	0 ♥
Sleep Talk ^E	—	—%	10	Normal		3 ♥	0 ♥
Snore ^E	40	100%	15	Normal		4 ♥	0 ♥
Substitute ^FRLGEXD	—	—%	10	Normal		2 ♥	0 ♥
Swagger ^EXD	—	90%	15	Normal		2 ♥	0 ♥
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Tutoring Generation II
Move	Power	Accuracy	PP	Type
Thunderbolt ^C	95	100%	15	Electric
Bold indicates this Pokémon receives STAB from this move. Italic indicates an evolved or alternate form of this Pokémon receives STAB from this move.

Side game data

Pokémon Ranger: Shadows of Almia
No.	Pokémon		Group	Field Move		Poké Assist
R-017		Gastly	Ghost		Psy Power 1		Ghost
Capture Points*			On Sight**
40			Teleports towards and chases player.
Browser Entry
It attacks by spitting out eerie orbs.
* - This is the amount of points required to capture the Pokémon (excluding boss Pokémon). ** - This is the reaction of the Pokémon when players approach it.

Sprites

Appearances

In the anime

Trivia

In one of its Pokédex entries, an Indian elephant is mentioned which contradicts knowledge of the Pokémon World as such animals don't exist. An Indian elephant is also mentioned in one of the Pokédex entries for Raichu in the original series episode "Electric Shock Showdown!"
- In Generation VIII, a Pokémon based on an Indian Elephant (Copperajah) may possibly be this elephant. However, it is Steel-type, therefore would be immune to Gastly's poison gas.
In The Ghost of Maiden's Peak, Gastly happens to hate sunlight.
Gastly and its evolved forms are the first and only Ghost/Poison-type Pokémon.
- This makes Gastly and its evolutions the only Poison-type Pokémon weak to the Dark-type.
Gastly's prototype name was "Spirit".
Gastly gains the least weight of any Pokémon upon evolving, gaining no weight upon evolving into Haunter.

Origin

Gastly appears to be based on ghosts, specifically those often depicted as decapitated heads, which are often seen in Japanese mythology. It may also be based on a will-o-wisp, seeing how its gas resembles fire and its Shiny coloration has its gas turn blue, which are a common color given to will-o-wisps in media. Its poison gas may be based on bad omens and how they can bring sickness.

Etymology

Gastly is based on the words ghastly and gas.

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