Yamask is a Ghost-type Halloween event-exclusive Pokémon from the Unova region. It can evolve into Cofagrigus after being fed 50 candies.
| Yamask - Spirit Pokémon
| Each of them carries a mask that used to be its face when it was human. Sometimes they look at it and cry.
Yamask is the part of a two-member family.
- Yamask was released with the start of the Halloween 2019 event on October 17th, 2019.
- Yamask is a Halloween exclusive Pokémon, which means it is not obtainable outside the events. This was confirmed from a Niantic's Reddit account.
- In the wild, maximum capture CP of Yamask is 841, however it can reach 912, if encountered Pokémon is boosted by current weather.
- Between October 17th and November 1st, 2019, Yamask was temporarily possible 5-km egg hatchling during the Halloween.
- As a former 2nd tier Raid Boss, Yamask's CP was 5,828. Its maximum capture CP in Bonus Challenge was 561 and 701 when encountered Pokémon was boosted by weather.
- Yamask was available in field research: "Defeat a Team GO Rocket Grunt." during Halloween 2019 with a maximum capture CP of 420.
- Shiny form of Yamask was released on October 17th, 2019.
- Yamask page, on the official Pokédex website
- Yamask article, on the Pokémon Wiki