Is Galarian Yamask good in Pokemon GO?

Not on its own, but Cofagrigus is B-tier for Great League, so a good copy is worth evolving.

Is Galarian Yamask a good raid attacker?

Galarian Yamask ranks #178 of 193 ghost attackers with 4.0 DPS. That is outside the top 15, so it is not a raid priority.

Should I evolve Galarian Yamask?

Cofagrigus is B-tier for Great League. Evolve the copy with the best IVs for that role and transfer spare Galarian Yamask for candy.

Can Galarian Yamask be shiny in Pokemon GO?

Yes. Shiny Galarian Yamask is available from photobomb, raid, research, wild. A shiny is worth keeping for the collection no matter its IVs.

#562 · Generation 5

Galarian Yamask

ground ghostRegional form

Forms & variants

Max CP (L40 / L50): 982 / 1,110
Raid catch CP (L20 / L25): 561 / 701
Research CP (L15): 420
Buddy distance: 3 km
2nd charged move: 50,000 dust · 50 candy

Shiny
Shadow
Tradable
Mega
Dynamax

Situational

Galarian Yamask does little on its own, but Cofagrigus has a niche. Keep one good-IV copy to evolve.

Battle roles

No ranked PvP or raid role.

Worth evolving into

Cofagrigus
B Great League (shadow)B Ultra League

Collection value

Regional form: rarer than the standard one and usually tied to events.

Tiers: S = meta-defining, A = strong, B = playable, C = niche. PvP from PvPoke overall rankings; raids from computed DPS/TDO within each attacking type; Max Battles from GO Hub tier lists.

Base stats

Attack95

Defense141

Stamina116

Base stats. Bars are scaled to the strongest Pokemon in the game.

Weak to

dark×1.6
ghost×1.6
grass×1.6
ice×1.6
water×1.6

Resists

electric×0.391
fighting×0.391
normal×0.391
poison×0.391
bug×0.625
rock×0.625

Evolution line

Yamask
→50 candyCofagrigus

→ Cofagrigus: 50 candy

Check your Pokemon's IVs

Ranks all 4,096 spreads for each league

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PvP rankings (GO Battle League)

Not ranked in any PvPoke league (usually because the CP or stats do not fit, or it is unreleased).

Raid attacker rankings

Attacking type	Tier	Rank	DPS	TDO	Best moves
ghost	–	#178 / 193	4.0	37	Astonish · Night Shade
rock	–	#286 / 294	3.5	33	Astonish · Rock Tomb

Level 40, 15/15/15, neutral target. DPS = damage per second, TDO = total damage output before fainting. Rank is among every Pokemon using that attacking type.

Moves

Fast move	Type	Raid power	Energy	Duration	DPS	PvP power	PvP energy	Speed
AstonishSTAB	ghost	7	+13	1.0s	7.0	12	+10	3 turns

Charged move	Type	Raid power	Energy	Duration	Dmg/energy	PvP power	PvP energy	Effects
Night ShadeSTAB	ghost	60	-50	2.5s	1.20	70	-45
Rock Tomb	rock	65	-50	3.0s	1.30	75	-50	100% chance: -1 foe Atk

Questions people ask

Is Galarian Yamask good in Pokemon GO?: Not on its own, but Cofagrigus is B-tier for Great League, so a good copy is worth evolving.
Should I keep or transfer Galarian Yamask?: Galarian Yamask does little on its own, but Cofagrigus has a niche. Keep one good-IV copy to evolve.
Is Galarian Yamask a good raid attacker?: Galarian Yamask ranks #178 of 193 ghost attackers with 4.0 DPS. That is outside the top 15, so it is not a raid priority.
Should I evolve Galarian Yamask?: Cofagrigus is B-tier for Great League. Evolve the copy with the best IVs for that role and transfer spare Galarian Yamask for candy.
Can Galarian Yamask be shiny in Pokemon GO?: Yes. Shiny Galarian Yamask is available from photobomb, raid, research, wild. A shiny is worth keeping for the collection no matter its IVs.

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Verdict: Situational