Battle-Only Form (GO)

A Battle-Only Form is a form transformation which a Pokémon can achieve during certain conditions while battling in Pokémon GO. They were introduced as a mechanic along with Morpeko during the Halloween 2024 Part I event. Currently, nothing with a Battle-Only Form can be used in Gyms in any way.

List of Battle-Only Forms

Pokémon Base form Battle-Only Form Effect Release date
#0681 Aegislash Aegislash Shield Forme Aegislash Blade Forme This Pokémon changes to Blade Forme when it uses a Charged Attack and changes to Shield Forme when it uses a Protect Shield.
Attack change
Defense change
Fast Attacks do 0 damage in Shield Forme
July 22, 2025
#0778 Mimikyu Mimikyu Disguised Form Mimikyu Busted Form Once per battle, the shroud that covers the Pokémon can protect it from a Charged Attack, after which Mimikyu's Defense will be lowered until the end of battle.
Defense drop
April 1, 2026
#0877 Morpeko Morpeko Full Belly Mode Morpeko Hangry Mode This Pokémon will transform when it uses a Charged Attack. When in Hangry Mode, Aura Wheel changes to a Dark-type attack. October 22, 2024

In the core series games

Castform, Cherrim, Zacian, and Zamazenta all possess forms which can only be activated during battle in the core series games. In Pokémon GO, these forms are instead permanent and set upon encountering and catching them.

Darmanitan, Meloetta, Greninja, and Necrozma all have at least one battle-exclusive form in the core series which has not yet been included in Pokémon GO.

The concept of Battle-Only Forms predates the release of Wishiwashi, Minior, Cramorant, Palafin, Ogerpon, and Terapagos all of whom can enter distinct forms during battle in the core series games.

Trivia

  • Since its release, Xerneas has entered its Active Mode when sent into battle. As there is no gameplay difference between this form and its Neutral Mode, and its release predates this concept, it is not considered a Battle-Only Form.
  • Despite Mimikyu having a Battle-Only Form, Mimikyu can't be used in Trainer Battles except against Team GO Rocket.

In other languages

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This article is part of Project Sidegames, a Bulbapedia project that aims to write comprehensive articles on the Pokémon Sidegames.