Mewnium Z

The Mewnium Z (Japanese: ミュウZ Mew Z) is a type of Z-Crystal introduced in Pokémon Sun and Moon. It is a Pokémon-specific Z-Crystal associated with Mew and allows it to upgrade its Psychic into the special Z-Move Genesis Supernova.

Mewnium Z
Mew Z
Bag Mewnium Z Sprite.png
Mewnium Z
Pokémon Global Link artwork
Introduced in Generation VII
Generation VII Bag Z-Crystals pocket icon.png Z-Crystals

In the core series games


Games Cost Sell price


  Bag item

Can create Mewnium Z held items for the player's Pokémon.

  Held item

In battle

Allows Mew (or a Pokémon transformed into Mew) to upgrade its Psychic into the special Z-Move Genesis Supernova. If Mew is transformed into a Pokémon other than Mew, it cannot use its exclusive Z-Move.

Unaffected by item negating effects (such as Embargo and Klutz). Item manipulating effects (such as Trick and Fling) cannot remove a Z-Crystal from a Pokémon.

Rayquaza cannot Mega Evolve if it holds a Z-Crystal.

Outside of battle

A held Mewnium Z is automatically removed if the Pokémon is traded between players.


Bag item

Games Description
SMUSUM It converts Z-Power into crystals that upgrade Mew's Psychic to an exclusive Z-Move.

Held item

Games Description
SMUSUM This is a crystallized form of Z-Power. It upgrades Mew's Psychic to a Z-Move.


Games Method
SM Pokémon Bank promotion
USUM Tide Song Hotel (from a man; requires a Mew in the party)

In other languages

Language Title
Chinese Cantonese 夢幻Z Muhngwaahn-Z
Mandarin 夢幻Z / 梦幻Z Mènghuàn-Z
  French Mewzélite
  German Mewnium Z
  Italian Mewnium Z
  Korean 뮤Z Mew-Z
  Russian Мьюниум Z M'yunium Z
  Spanish Mewstal Z

External links

  This item article is part of Project ItemDex, a Bulbapedia project that aims to write comprehensive articles on all items.