Mega Evolution

Mega Evolution (Japanese: メガシンカ Mega Evolution) is a temporary transformation introduced in Generation VI that affects certain Pokémon. In the core series, Mega Evolution requires the player to hold a Key Stone and a Pokémon capable of Mega Evolution holding its compatible Mega Stone (except in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, in which the player simply needs to have the Mega Stone in their bag). While Mega Evolution is also available in the Generation VII games, the feature is no longer present in the core series as of Pokémon Sword and Shield, due to the lack of Key Stones and Mega Stones, although it still appears in some spin-offs like Pokémon GO and Pokémon Masters EX.
There are 46 species of Pokémon that are capable of Mega Evolution, and there are 48 different Mega Evolutions.
Mega Evolved Pokémon are identified by having "Mega" in front of their name. Grammatically, a Pokémon who is undergoing the transformation is described as Mega Evolving, and a Pokémon who has completed the transformation is described as Mega Evolved. The present- and future-tense of Mega Evolution is Mega Evolve. Mega Evolution is described as a phenomenon.
== In the series ==
Multiple Mega Evolutions have been featured in the series:
* In "TBC", Liam's Swampert (nicknamed Muddy) Mega Evolved into a Mega Swampert.
* In "TBC", Azusa's Lopunny (nicknamed Lola) Mega Evolved into a Mega Lopunny.
* In "TBC", Juleka's Gengar (nicknamed TBC) Mega Evolved into a Mega Gengar.
* In "TBC", Nodoka Miyazaki's Shiny Gardevoir (nicknamed Aphrodite) Mega Evolved into a Shiny Mega Gardevoir.
* In "TBC", Mugi's Audino (nicknamed Autumn) Mega Evolved into a Mega Audino.
* In "TBC", Ritsu's Banette (nicknamed Banane) Mega Evolved into a Mega Banette.
* In "TBC", Yui's Mawile (nicknamed Okiku) Mega Evolved into a Mega Mawile.