#0562 · Generation V

Yamask

Ghost · Spirit Pokémon — first seen in Generation V.

Just:

Showing the official games. Pick a ROM hack to see how it changes this Pokémon, or compare all of them.

Base stats

Stat	Base	Min	Max
HP	38	186	280
Attack	30	58	174
Defense	85	157	295
Sp. Attack	55	103	229
Sp. Defense	65	121	251
Speed	30	58	174
Total	303

Min and max are at level 100: the minimum is 0 IVs, 0 EVs and a hindering nature, the maximum 31 IVs, 252 EVs and a beneficial nature. Shedinja's HP is always 1 whatever the formula says.

Type defences

Damage Yamask takes from each attacking type.

×2

GhostDark

×½

PoisonBug

×0

NormalFighting

×1

FlyingGroundRockSteelFireWaterGrassElectricPsychicIceDragonFairy

Evolution

Yamask#0562

Level 34

Cofagrigus#0563 Take damage in a specific place

Runerigus#0867

Methods are the current official ones. A ROM hack may change them — trade evolutions especially; the guide table below says which do.

Other forms

Galarian Yamask

Moves by official game

Level-up, TM/HM, tutor and egg moves exactly as each game has them. The newest game this site covers is open; the rest fold out.

Ultra Sun / Ultra Moon15 level-up · 29 TM/HM · 17 tutor · 11 egg

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Protect	Normal	Status	—	—	10
1	Astonish	Ghost	Physical	30	100%	15
5	Disable	Normal	Status	—	100%	20
9	Haze	Ice	Status	—	—	30
13	Night Shade	Ghost	Special	—	100%	15
17	Hex	Ghost	Special	65	100%	10
21	Will-O-Wisp	Fire	Status	—	85%	15
25	Ominous Wind	Ghost	Special	60	100%	5
29	Curse	Ghost	Status	—	—	10
33	Guard Split	Psychic	Status	—	—	10
33	Power Split	Psychic	Status	—	—	10
37	Shadow Ball	Ghost	Special	80	100%	15
41	Grudge	Ghost	Status	—	—	5
45	Mean Look	Normal	Status	—	—	5
49	Destiny Bond	Ghost	Status	—	—	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM04	Calm Mind	Psychic	Status	—	—	20
TM06	Toxic	Poison	Status	—	90%	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM20	Safeguard	Normal	Status	—	—	25
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM29	Psychic	Psychic	Special	90	100%	10
TM30	Shadow Ball	Ghost	Special	80	100%	15
TM32	Double Team	Normal	Status	—	—	15
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM46	Thief	Dark	Physical	60	100%	25
TM48	Round	Normal	Special	60	100%	15
TM53	Energy Ball	Grass	Special	90	100%	10
TM61	Will-O-Wisp	Fire	Status	—	85%	15
TM63	Embargo	Dark	Status	—	100%	15
TM66	Payback	Dark	Physical	50	100%	10
TM77	Psych Up	Normal	Status	—	—	10
TM83	Infestation	Bug	Special	20	100%	20
TM85	Dream Eater	Psychic	Special	100	100%	15
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM92	Trick Room	Psychic	Status	—	—	5
TM97	Dark Pulse	Dark	Special	80	100%	15

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Snore	Normal	Special	50	100%	15
Spite	Ghost	Status	—	100%	10
Pain Split	Normal	Status	—	—	20
Trick	Psychic	Status	—	100%	10
Role Play	Psychic	Status	—	—	10
Magic Coat	Psychic	Status	—	—	15
Knock Off	Dark	Physical	65	100%	20
Skill Swap	Psychic	Status	—	—	10
Snatch	Dark	Status	—	—	10
Iron Defense	Steel	Status	—	—	15
Block	Normal	Status	—	—	5
Shock Wave	Electric	Special	60	—	20
Zen Headbutt	Psychic	Physical	80	90%	15
Wonder Room	Psychic	Status	—	—	10
Telekinesis	Psychic	Status	—	—	15
After You	Normal	Status	—	—	15
Ally Switch	Psychic	Status	—	—	15

Egg moves

Move	Type	Cat.	Power	Acc.	PP
Disable	Normal	Status	—	100%	20
Nightmare	Ghost	Status	—	100%	15
Endure	Normal	Status	—	—	10
Memento	Dark	Status	—	100%	10
Imprison	Psychic	Status	—	—	10
Fake Tears	Dark	Status	—	100%	20
Heal Block	Psychic	Status	—	100%	15
Toxic Spikes	Poison	Status	—	—	20
Nasty Plot	Dark	Status	—	—	20
Ally Switch	Psychic	Status	—	—	15
Crafty Shield	Fairy	Status	—	—	10

Sun / Moon15 level-up · 29 TM/HM · 10 egg

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Protect	Normal	Status	—	—	10
1	Astonish	Ghost	Physical	30	100%	15
5	Disable	Normal	Status	—	100%	20
9	Haze	Ice	Status	—	—	30
13	Night Shade	Ghost	Special	—	100%	15
17	Hex	Ghost	Special	65	100%	10
21	Will-O-Wisp	Fire	Status	—	85%	15
25	Ominous Wind	Ghost	Special	60	100%	5
29	Curse	Ghost	Status	—	—	10
33	Guard Split	Psychic	Status	—	—	10
33	Power Split	Psychic	Status	—	—	10
37	Shadow Ball	Ghost	Special	80	100%	15
41	Grudge	Ghost	Status	—	—	5
45	Mean Look	Normal	Status	—	—	5
49	Destiny Bond	Ghost	Status	—	—	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM04	Calm Mind	Psychic	Status	—	—	20
TM06	Toxic	Poison	Status	—	90%	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM20	Safeguard	Normal	Status	—	—	25
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM29	Psychic	Psychic	Special	90	100%	10
TM30	Shadow Ball	Ghost	Special	80	100%	15
TM32	Double Team	Normal	Status	—	—	15
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM46	Thief	Dark	Physical	60	100%	25
TM48	Round	Normal	Special	60	100%	15
TM53	Energy Ball	Grass	Special	90	100%	10
TM61	Will-O-Wisp	Fire	Status	—	85%	15
TM63	Embargo	Dark	Status	—	100%	15
TM66	Payback	Dark	Physical	50	100%	10
TM77	Psych Up	Normal	Status	—	—	10
TM83	Infestation	Bug	Special	20	100%	20
TM85	Dream Eater	Psychic	Special	100	100%	15
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM92	Trick Room	Psychic	Status	—	—	5
TM97	Dark Pulse	Dark	Special	80	100%	15

Egg moves

Move	Type	Cat.	Power	Acc.	PP
Disable	Normal	Status	—	100%	20
Nightmare	Ghost	Status	—	100%	15
Endure	Normal	Status	—	—	10
Memento	Dark	Status	—	100%	10
Imprison	Psychic	Status	—	—	10
Fake Tears	Dark	Status	—	100%	20
Heal Block	Psychic	Status	—	100%	15
Toxic Spikes	Poison	Status	—	—	20
Nasty Plot	Dark	Status	—	—	20
Ally Switch	Psychic	Status	—	—	15

Omega Ruby / Alpha Sapphire15 level-up · 31 TM/HM · 15 tutor · 10 egg

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Protect	Normal	Status	—	—	10
1	Astonish	Ghost	Physical	30	100%	15
5	Disable	Normal	Status	—	100%	20
9	Haze	Ice	Status	—	—	30
13	Night Shade	Ghost	Special	—	100%	15
17	Hex	Ghost	Special	65	100%	10
21	Will-O-Wisp	Fire	Status	—	85%	15
25	Ominous Wind	Ghost	Special	60	100%	5
29	Curse	Ghost	Status	—	—	10
33	Guard Split	Psychic	Status	—	—	10
33	Power Split	Psychic	Status	—	—	10
37	Shadow Ball	Ghost	Special	80	100%	15
41	Grudge	Ghost	Status	—	—	5
45	Mean Look	Normal	Status	—	—	5
49	Destiny Bond	Ghost	Status	—	—	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM04	Calm Mind	Psychic	Status	—	—	20
TM06	Toxic	Poison	Status	—	90%	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM20	Safeguard	Normal	Status	—	—	25
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM29	Psychic	Psychic	Special	90	100%	10
TM30	Shadow Ball	Ghost	Special	80	100%	15
TM32	Double Team	Normal	Status	—	—	15
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM46	Thief	Dark	Physical	60	100%	25
TM48	Round	Normal	Special	60	100%	15
TM53	Energy Ball	Grass	Special	90	100%	10
TM61	Will-O-Wisp	Fire	Status	—	85%	15
TM63	Embargo	Dark	Status	—	100%	15
TM66	Payback	Dark	Physical	50	100%	10
TM70	Flash	Normal	Status	—	100%	20
TM77	Psych Up	Normal	Status	—	—	10
TM83	Infestation	Bug	Special	20	100%	20
TM85	Dream Eater	Psychic	Special	100	100%	15
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM92	Trick Room	Psychic	Status	—	—	5
TM94	Secret Power	Normal	Physical	70	100%	20
TM97	Dark Pulse	Dark	Special	80	100%	15

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Snore	Normal	Special	50	100%	15
Spite	Ghost	Status	—	100%	10
Pain Split	Normal	Status	—	—	20
Trick	Psychic	Status	—	100%	10
Role Play	Psychic	Status	—	—	10
Magic Coat	Psychic	Status	—	—	15
Knock Off	Dark	Physical	65	100%	20
Skill Swap	Psychic	Status	—	—	10
Snatch	Dark	Status	—	—	10
Iron Defense	Steel	Status	—	—	15
Block	Normal	Status	—	—	5
Shock Wave	Electric	Special	60	—	20
Zen Headbutt	Psychic	Physical	80	90%	15
Wonder Room	Psychic	Status	—	—	10
After You	Normal	Status	—	—	15

Egg moves

Move	Type	Cat.	Power	Acc.	PP
Disable	Normal	Status	—	100%	20
Nightmare	Ghost	Status	—	100%	15
Endure	Normal	Status	—	—	10
Memento	Dark	Status	—	100%	10
Imprison	Psychic	Status	—	—	10
Fake Tears	Dark	Status	—	100%	20
Heal Block	Psychic	Status	—	100%	15
Toxic Spikes	Poison	Status	—	—	20
Nasty Plot	Dark	Status	—	—	20
Ally Switch	Psychic	Status	—	—	15

X / Y15 level-up · 30 TM/HM · 10 egg

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Protect	Normal	Status	—	—	10
1	Astonish	Ghost	Physical	30	100%	15
5	Disable	Normal	Status	—	100%	20
9	Haze	Ice	Status	—	—	30
13	Night Shade	Ghost	Special	—	100%	15
17	Hex	Ghost	Special	65	100%	10
21	Will-O-Wisp	Fire	Status	—	85%	15
25	Ominous Wind	Ghost	Special	60	100%	5
29	Curse	Ghost	Status	—	—	10
33	Guard Split	Psychic	Status	—	—	10
33	Power Split	Psychic	Status	—	—	10
37	Shadow Ball	Ghost	Special	80	100%	15
41	Grudge	Ghost	Status	—	—	5
45	Mean Look	Normal	Status	—	—	5
49	Destiny Bond	Ghost	Status	—	—	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM04	Calm Mind	Psychic	Status	—	—	20
TM06	Toxic	Poison	Status	—	90%	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM20	Safeguard	Normal	Status	—	—	25
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM29	Psychic	Psychic	Special	90	100%	10
TM30	Shadow Ball	Ghost	Special	80	100%	15
TM32	Double Team	Normal	Status	—	—	15
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM46	Thief	Dark	Physical	60	100%	25
TM48	Round	Normal	Special	60	100%	15
TM53	Energy Ball	Grass	Special	90	100%	10
TM61	Will-O-Wisp	Fire	Status	—	85%	15
TM63	Embargo	Dark	Status	—	100%	15
TM66	Payback	Dark	Physical	50	100%	10
TM70	Flash	Normal	Status	—	100%	20
TM77	Psych Up	Normal	Status	—	—	10
TM83	Infestation	Bug	Special	20	100%	20
TM85	Dream Eater	Psychic	Special	100	100%	15
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM92	Trick Room	Psychic	Status	—	—	5
TM97	Dark Pulse	Dark	Special	80	100%	15

Egg moves

Move	Type	Cat.	Power	Acc.	PP
Disable	Normal	Status	—	100%	20
Nightmare	Ghost	Status	—	100%	15
Endure	Normal	Status	—	—	10
Memento	Dark	Status	—	100%	10
Imprison	Psychic	Status	—	—	10
Fake Tears	Dark	Status	—	100%	20
Heal Block	Psychic	Status	—	100%	15
Toxic Spikes	Poison	Status	—	—	20
Nasty Plot	Dark	Status	—	—	20
Ally Switch	Psychic	Status	—	—	15

Black 2 / White 215 level-up · 27 TM/HM · 15 tutor · 8 egg

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Protect	Normal	Status	—	—	10
1	Astonish	Ghost	Physical	30	100%	15
5	Disable	Normal	Status	—	100%	20
9	Haze	Ice	Status	—	—	30
13	Night Shade	Ghost	Special	—	100%	15
17	Hex	Ghost	Special	65	100%	10
21	Will-O-Wisp	Fire	Status	—	85%	15
25	Ominous Wind	Ghost	Special	60	100%	5
29	Curse	Ghost	Status	—	—	10
33	Guard Split	Psychic	Status	—	—	10
33	Power Split	Psychic	Status	—	—	10
37	Shadow Ball	Ghost	Special	80	100%	15
41	Grudge	Ghost	Status	—	—	5
45	Mean Look	Normal	Status	—	—	5
49	Destiny Bond	Ghost	Status	—	—	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM04	Calm Mind	Psychic	Status	—	—	20
TM06	Toxic	Poison	Status	—	90%	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM19	Telekinesis	Psychic	Status	—	—	15
TM20	Safeguard	Normal	Status	—	—	25
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM29	Psychic	Psychic	Special	90	100%	10
TM30	Shadow Ball	Ghost	Special	80	100%	15
TM32	Double Team	Normal	Status	—	—	15
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM46	Thief	Dark	Physical	60	100%	25
TM48	Round	Normal	Special	60	100%	15
TM53	Energy Ball	Grass	Special	90	100%	10
TM61	Will-O-Wisp	Fire	Status	—	85%	15
TM63	Embargo	Dark	Status	—	100%	15
TM66	Payback	Dark	Physical	50	100%	10
TM70	Flash	Normal	Status	—	100%	20
TM77	Psych Up	Normal	Status	—	—	10
TM85	Dream Eater	Psychic	Special	100	100%	15
TM87	Swagger	Normal	Status	—	85%	15
TM90	Substitute	Normal	Status	—	—	10
TM92	Trick Room	Psychic	Status	—	—	5

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Snore	Normal	Special	50	100%	15
Spite	Ghost	Status	—	100%	10
Sleep Talk	Normal	Status	—	—	10
Pain Split	Normal	Status	—	—	20
Trick	Psychic	Status	—	100%	10
Role Play	Psychic	Status	—	—	10
Magic Coat	Psychic	Status	—	—	15
Knock Off	Dark	Physical	65	100%	20
Skill Swap	Psychic	Status	—	—	10
Snatch	Dark	Status	—	—	10
Iron Defense	Steel	Status	—	—	15
Block	Normal	Status	—	—	5
Dark Pulse	Dark	Special	80	100%	15
Wonder Room	Psychic	Status	—	—	10
After You	Normal	Status	—	—	15

Egg moves

Move	Type	Cat.	Power	Acc.	PP
Disable	Normal	Status	—	100%	20
Nightmare	Ghost	Status	—	100%	15
Endure	Normal	Status	—	—	10
Memento	Dark	Status	—	100%	10
Imprison	Psychic	Status	—	—	10
Fake Tears	Dark	Status	—	100%	20
Heal Block	Psychic	Status	—	100%	15
Nasty Plot	Dark	Status	—	—	20

Black / White15 level-up · 27 TM/HM · 8 egg

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Protect	Normal	Status	—	—	10
1	Astonish	Ghost	Physical	30	100%	15
5	Disable	Normal	Status	—	100%	20
9	Haze	Ice	Status	—	—	30
13	Night Shade	Ghost	Special	—	100%	15
17	Hex	Ghost	Special	65	100%	10
21	Will-O-Wisp	Fire	Status	—	85%	15
25	Ominous Wind	Ghost	Special	60	100%	5
29	Curse	Ghost	Status	—	—	10
33	Guard Split	Psychic	Status	—	—	10
33	Power Split	Psychic	Status	—	—	10
37	Shadow Ball	Ghost	Special	80	100%	15
41	Grudge	Ghost	Status	—	—	5
45	Mean Look	Normal	Status	—	—	5
49	Destiny Bond	Ghost	Status	—	—	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM04	Calm Mind	Psychic	Status	—	—	20
TM06	Toxic	Poison	Status	—	90%	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM19	Telekinesis	Psychic	Status	—	—	15
TM20	Safeguard	Normal	Status	—	—	25
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM29	Psychic	Psychic	Special	90	100%	10
TM30	Shadow Ball	Ghost	Special	80	100%	15
TM32	Double Team	Normal	Status	—	—	15
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM46	Thief	Dark	Physical	60	100%	25
TM48	Round	Normal	Special	60	100%	15
TM53	Energy Ball	Grass	Special	90	100%	10
TM61	Will-O-Wisp	Fire	Status	—	85%	15
TM63	Embargo	Dark	Status	—	100%	15
TM66	Payback	Dark	Physical	50	100%	10
TM70	Flash	Normal	Status	—	100%	20
TM77	Psych Up	Normal	Status	—	—	10
TM85	Dream Eater	Psychic	Special	100	100%	15
TM87	Swagger	Normal	Status	—	85%	15
TM90	Substitute	Normal	Status	—	—	10
TM92	Trick Room	Psychic	Status	—	—	5

Egg moves

Move	Type	Cat.	Power	Acc.	PP
Disable	Normal	Status	—	100%	20
Nightmare	Ghost	Status	—	100%	15
Endure	Normal	Status	—	—	10
Memento	Dark	Status	—	100%	10
Imprison	Psychic	Status	—	—	10
Fake Tears	Dark	Status	—	100%	20
Heal Block	Psychic	Status	—	100%	15
Nasty Plot	Dark	Status	—	—	20

Where to find it in the official games

Every area in the 16 official games on this site that has it, from each game's own encounter tables.

In the wild

Game	Area	Method	Levels	Rate
Black / White	Relic Castle	Grass	19-22	50%
Black 2 / White 2	Relic Castle	Grass	18-30	40%

Where to find it in the ROM hacks

30 guides on this site put it somewhere you can catch it. Areas link to that guide's own route page, with its own rates and levels.

Guide	Where
Unbound	Ruins Of Void B3FLand · Lv 34-37 · 30%
Emerald Rogue Galar	Forest 0 — HoennGhost-theme rooms · Lv — Mountain 0 — HoennGround-theme rooms · Lv — Mountain 2 — HoennGround-theme rooms · Lv — and 9 more areas
Pokémon Soulgold	Sprout Tower 2FGrass · Lv 3-6 · 20% Sprout Tower 3FGrass · Lv 3-6 · 20%
Pokémon Soulgold Galar	Safari Zone Low LeftGrass · Lv 30-40 · 15%
Infinite Fusion	Route 10Grass (Night) (Remix) · Lv 14-17 · 20% Pokemon Tower F3Cave (Remix) · Lv 25-34 · 15% Pokemon Tower F4Cave (Remix) · Lv 25-34 · 15% and 4 more areas
Pokémon R.O.W.E	Desert UnderpassGrass · Lv Scales · 5%rare Mt. PyreGrass · Lv Scales · 20% Mt. PyreGrass · Lv Scales · 20% and 2 more areas
Pokémon R.O.W.E Galar	Desert UnderpassHidden · Lv Scales · 33% Desert UnderpassHidden · Lv Scales · 34% Mt. PyreGrass · Lv Scales · 5%rare and 1 more area
Sword and Shield Ultimate Plus	Crown Tundra Grassy EastOverworld · Lv 63-67 · 100%
Sword and Shield Ultimate Plus Galar	Wild Area 1 SouthwestRaid Den · Lv — · 2 Wild Area 1 SoutheastRaid Den · Lv — · 2 Wild Area 1 NortheastRaid Den · Lv — · 2 and 6 more areas
Blaze Black 2 Redux & Volt White 2 Redux	Relic Castle - Upper FloorsGrass · Lv 23-25 · 20% Relic Castle - Upper FloorsGrass · Lv 24-26 · 20% Relic Castle - Lower FloorsGrass · Lv 31-35 · 20% and 1 more area
Radical Red	Diglett's Cave 1FGrass (Day) · Lv 7-9 · 10%
Radical Red Galar	Diglett's Cave 1FGrass (Night) · Lv 7-9 · 10%
Elite Redux	Mirage Tower 1FGrass · Lv — · 6% Mirage Tower 2FGrass · Lv — · 6% Mirage Tower 3FGrass · Lv — · 6% and 4 more areas
Elite Redux Galar	Route 109Gift · Lv — Mirage Tower 1FGrass · Lv — · 4%rare Mirage Tower 2FGrass · Lv — · 4%rare and 3 more areas
Inclement Emerald	Mirage TowerGrass · Lv Scales · 10% Sandstrewn RuinsGrass · Lv Scales · 20%
Pokémon Odyssey II: Heroes of Lemuria	Tharsis (Wonder Trade House)Wonder Trade · Lv ? GraveyardGrass · Lv 14-16 · 20%
Pokémon Crippling Medical Debt Edition	Route 104Grass · Lv 15-18 · 4%rare
Pokémon Crippling Medical Debt Edition Galar	Route 104Grass · Lv 15-18 · 4%rare Granite Cave B1FGrass · Lv 20-25 · 20%
Blinding White Plus	Virbank RefineryDark Grass · Lv 21-24 · 10%
Gaia	Ignis Catacombs (B1F)Ground · Lv — · 10% Ignis Catacombs (B2F via B1F's north ladder)Ground · Lv — · 4%rare Ignis Catacombs (B2F via B1F's south ladder)Ground · Lv — · 4%rare
Pokémon Emerald Imperium	Granite Cave B1FGrass · Lv 12-17 · 4%rare Mt. Pyre 1FGrass · Lv 35-40 · 10% Mt. Pyre 2FGrass · Lv 35-40 · 20%
Pokémon Emerald Imperium Galar	Route 117Grass · Lv 20-24 · 5%rare Mt. Pyre 1FGrass · Lv 35-40 · 8% Mt. Pyre 2FGrass · Lv 35-40 · 20%
Pokémon: Wishes of Tomorrow Galar	AshlandsGrass · Lv 15-20 · 10% Ashlands DesertGrass · Lv 15-20 · 10%
Pokémon Emerald Squared	Granite Cave 1FLand · Lv 13-20 · 5% Granite Cave B1FLand · Lv 13-20 · 5% Granite Cave B2FLand · Lv 13-20 · 5% and 5 more areas
Pokémon Emerald Squared Galar	Granite Cave 1FLand · Lv 13-20 · 5% Granite Cave B1FLand · Lv 13-20 · 5% Granite Cave B2FLand · Lv 13-20 · 5% and 5 more areas
Pokémon Tourmaline	Route 88Swarm · Lv —
Blaze Black 2 & Volt White 2	Relic Castle - Upper FloorsSand — 1F · Lv 22-25 · 20% Relic Castle - Upper FloorsSand — B1F · Lv 22-25 · 20% Relic Castle - Lower FloorsFloor — Room Left of Pots · Lv 31-35 · 20% and 1 more area
Rising Ruby & Sinking Sapphire	Mt. Pyre 1F / 2FWalking · Lv 40
Blaze Black & Volt White	Relic Castle — B1FSand · Lv — · 20%
Pokémon Project: Pi	Mt. MoonWild · Lv ?
Pokémon Omega Ruby Origins	Meteor Falls Section 4Good Rod · Lv 8-10 Route 110Old Rod · Lv 20 Route 134Old Rod · Lv 27 and 1 more area
Poke47	Mirage TowerOverworld (1F) · Lv 20-21 · 50% Mirage TowerOverworld (2F) · Lv 20-21 · 50% Mirage TowerOverworld (3F) · Lv 20-21 · 50% and 5 more areas
Poke47 Galar	Mirage TowerOverworld (1F) · Lv 20 · 20% Mirage TowerOverworld (2F) · Lv 20 · 20% Mirage TowerOverworld (3F) · Lv 20 · 20% and 2 more areas
HeartGold Generations	Burned TowerGrass (1F, morning / day) · Lv 14-15 · 15% Burned TowerGrass (1F, morning / day, Hoenn Sound) · Lv 14 · 5%rare Burned TowerGrass (1F, morning / day, Sinnoh Sound) · Lv 14 · 5%rare and 3 more areas
HeartGold Generations Galar	Burned TowerGrass (1F, night) · Lv 14-15 · 31.9% Burned TowerGrass (1F, night, Hoenn Sound) · Lv 14 · 21.3% Burned TowerGrass (1F, night, Sinnoh Sound) · Lv 14 · 21.3% and 3 more areas
Pokémon Platinum Redux	Old ChateauGrass · Lv ? · 12% Wayward CavePalmer · Lv ?
Pokémon Saiph 2	Lake FalahteGrass · Lv 7 · 1%rare Tempou RuinsGrass/Walking · Lv 9-11 · 10% Desert RuinsWalking · Lv 17-19 · 10% and 2 more areas
Pokémon Parallel Emerald	Mt. PyreGrass · Lv ? · 20% Mt. Pyre OutsideGrass · Lv ? · 5%rare Route 130Grass · Lv ? · 10%
Pokémon Black Pearl Emerald	Mt. PyreGrass · Lv 47-53 · 20% Mt. PyreGrass · Lv 47-53 · 10% Mt. PyreGrass · Lv 47-53 · 10% and 4 more areas
Pokémon Black Pearl Emerald Galar	Granite CaveGrass · Lv 11-17 · 5%rare
Pokémon Mirror Gold	Mt. Moon 2FGrass (Morning / Day) · Lv 67 · 20% Union Cave B2FGrass (Night) · Lv 25 · 10%
Pokémon Heart & Soul	not in the wild in this guide's tables — evolve, trade or battle it
Celia's Stupid Romhack	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Exceeded	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Overcomplicated	not in the wild in this guide's tables — evolve, trade or battle it

Compare official Yamask with the ROM hacks →

In the 34 guides that include it

Changed in 29 of 34 guides: retyped in 4, stats in 9, abilities in 13, evolution in 25.

Every ROM hack on this site that has Yamask, and what it did to it. Guides that changed something are first. Click one for that version's full page — locations, moveset and TMs.

Guide		Type	Total	Abilities
Unbound Evolves into Cofagrigus at level 34	Changed	Ghost	303	Mummy
Pokémon Soulgold Evolves into Cofagrigus — Level 34	Changed	Ghost	303	Mummy
Pokémon Heart & Soul Evolves into Cofagrigus at Level 34	Changed	Ghost	303	Mummy
Infinite Fusion Evolves into: Cofagrigus (Level 34)	Changed	Ghost	303	Mummy, Mummy
Pokémon R.O.W.E Evolves into Cofagrigus at Level 34	Changed	Ghost	303	Mummy
Celia's Stupid Romhack	Changed	Ghost	315 +12 +12 HP	Early Bird + Early Bird
Sword and Shield Ultimate Plus Evolves into Cofagrigus — Level 34	Changed	Ghost	303	Mummy
Blaze Black 2 Redux & Volt White 2 Redux	Changed	Ghost	303	Mummy, Mummy
Radical Red Evolves into Cofagrigus at Level 34	Changed	Ghost	303	Mummy, Shadow Shield + Shadow Shield
Elite Redux Evolves into Cofagrigus at level 24	Changed	Ghost	303	Mummy, Shadow Shield, Shadow Tag
Inclement Emerald Evolves into Cofagrigus at Level 34	Changed	Ghost	303	Mummy
Pokémon Odyssey II: Heroes of Lemuria Evolves at Lv. 34	Changed	Ghost→GhostFlying	320 +17 +7 HP, +5 Defense, +5 Sp. Atk	Mummy, Analytic + Analytic
Pokémon Crippling Medical Debt Edition Evolves into Cofagrigus at Level 34	Changed		0 -303 -38 HP, -30 Attack, -85 Defense, -55 Sp. Atk, -65 Sp. Def, -30 Speed	—
Blinding White Plus Evolves at Level 40	Changed	Ghost	343 +40 +10 HP, +10 Defense, +10 Sp. Atk, +10 Sp. Def	Mummy, Cursed Body + Cursed Body
Pokémon Emerald Imperium Evolves into Cofagrigus at level 34	Changed	Ghost	303	Mummy, Shadow Shield + Shadow Shield
Pokémon: Wishes of Tomorrow Evolves into Cofagrigus at Level 34	Changed	Ghost	303	Mummy
Pokémon Exceeded Evolves into Cofagrigus at level 34	Changed	Ghost	303	Mummy
Pokémon Emerald Squared Evolves into Cofagrigus at level 34	Changed	Ghost→GhostSteel	318 +15 +10 HP, +5 Sp. Atk	Mummy
Blaze Black 2 & Volt White 2	Changed	Ghost	303	Mummy, Mummy
Blaze Black & Volt White	Changed	Ghost	303	Mummy, Mummy
Pokémon Project: Pi Evolves into Runerigus at level 26	Changed	Ghost→GroundGhost	295 -8 -1 HP, +24 Attack, -2 Defense, -26 Sp. Atk, -2 Sp. Def, -1 Speed	Wandering Spirit + Wandering Spirit − Mummy
Pokémon Omega Ruby Origins Evolves into Runerigus at Level 34	Changed	Ghost→GroundGhost	303 +25 Attack, -25 Sp. Atk	Shadow Tag + Shadow Tag − Mummy
Poke47 Evolves into Cofagrigus — Level up: 34	Changed	Ghost	303	Mummy, Pressure, Berserk + Pressure, Berserk
HeartGold Generations Evolves into Cofagrigus — at level 34	Changed	Ghost	303	Mummy
Pokémon Platinum Redux Evolves at Lv. 33. The documentation gives the level but not what it turns into	Changed	Ghost	425 +122 +22 HP, +20 Attack, +30 Defense, +20 Sp. Atk, +10 Sp. Def, +20 Speed	Magic Guard + Magic Guard − Mummy
Pokémon Saiph 2 Evolves into Cofagrigus by leveling up at daytime Evolves into Runerigus by leveling up at night	Changed		0 -303 -38 HP, -30 Attack, -85 Defense, -55 Sp. Atk, -65 Sp. Def, -30 Speed	—
Pokémon Parallel Emerald Evolves into Cofagrigus at level 34	Changed	Ghost	303	Mummy
Pokémon Black Pearl Emerald Evolves into Cofagrigus at Level 34	Changed	Ghost	303	Mummy
Pokémon Mirror Gold Evolves into Cofagrigus — at level 32	Changed	Ghost	303	Mummy
Emerald Rogue	Unchanged	Ghost	303	Mummy
Gaia	Unchanged	Ghost	303	Mummy
Pokémon Tourmaline	Unchanged		303	—
Rising Ruby & Sinking Sapphire	Unchanged	Ghost	303	Mummy
Pokémon Overcomplicated	Unchanged	Ghost	303	Misty Surge

Pokédex entries

What each game says about it, in the games' own words.

Black / Y / Alpha Sapphire	Each of them carries a mask that used to be its face when it was human. Sometimes they look at it and cry.
White	These Pokémon arose from the spirits of people interred in graves in past ages. Each retains memories of its former life.
Black 2 / White 2 / X / Omega Ruby	These Pokémon arose from the spirits of people interred in graves. Each retains memories of its former life.

Names in other languages

Japanese	デスマス
Japanese (Rōmaji)	Desumasu
German	Makabaja
French	Tutafeh
Spanish	Yamask
Italian	Yamask
Korean	데스마스
Chinese (Simplified)	哭哭面具
Chinese (Traditional)	哭哭面具

Official data here is present-day reference data from PokéAPI, not a snapshot of any one game's era — the Fairy type and hidden abilities arrived partway through the series, so a difference against an older game can belong to the series rather than to that ROM hack.