Yamask sits at the start of its evolution line — not yet at full power, but that changes fast. Most trainers push through to Cofagrigus as fast as possible. Normal and Fighting moves can't touch it, and only 2 types hit it super-effectively. Known as the Spirit Pokemon.
Defense and Sp. Def carry most of Yamask's stat budget. Attack's the obvious dump stat. Common in the wild and yields 1 Defense EV. Follows a medium-fast 1M XP curve.
A clay slab with cursed engravings took possession of a Yamask. The slab is said to be absorbing the Yamask’s dark power.
It’s said that this Pokémon was formed when an ancient clay tablet was drawn to a vengeful spirit.
Yamask Weakness
ExcellentType-wise, Yamask takes extra damage from Ghost and Dark. Normal and Fighting moves do nothing thanks to a full immunity.
One evolution ahead. Yamask grows into Cofagrigus through a straightforward two-stage chain. No compatible partners for breeding via two egg groups. Eggs are average hatch time. Evolving adds up to 180 stat points total.
How to Evolve
Breed Yamask easily from the Indeterminate and Mineral egg groups. Pass egg moves like Ally Switch, Disable, Endure and 7 more to offspring.
The Sash lets Yamask ignore defensive shortcomings for one turn. Use that turn to deal early damage, and Mummy squeezes extra value from the position. Max Sp. Atk without Speed EVs push damage output.
Best Build
Best Yamask Moveset
- Trick Room
- Memento
- Night Shade
- Skill Swap
Recommended Teammates
The egg pool carries weight here. Ally Switch and Disable aren't available any other way for Yamask, and they meaningfully change what it threatens. Stack those on top of Shadow Ball and Hex for solid options.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
Yamask is meant to evolve into Cofagrigus. At 303 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.
Yamask can evolve into Cofagrigus and Galarian Runerigus depending on the method. Yamask is the base form in a 3-stage evolutionary line.
Mummy is the go-to ability for Yamask. It changes attacking Pokémon's abilities to Mummy on contact. It's Yamask's only ability.
Base 30 Speed is low. Priority moves or Trick Room are the way to go. On offense, Yamask is leaning toward the special side (base 55 Sp. Atk).
Yamask appears in 8 games, including Black & White, Black 2 & White 2, and X & Y.
Since debuting in Black & White, Yamask has appeared in 8 titles over 5 generations. Along the way, it received a Galarian form in Generation 8, keeping it relevant across different competitive metas.
- Gen IY
Yellow - Gen IRB

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRS

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBWDebut

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORAS

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISM

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwShGalarian

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A
