Mega Evolution occurs when a Trainer forms a deep bond with their Pokémon, allowing their Key Stone to resonate with the Mega Stone held by the Pokémon.
Unlike regular Evolution, which causes a Pokémon to permanently change, Mega Evolution temporarily boosts a Pokémon's power and alters its appearance.
Zygarde, the mysterious Order Pokémon, plays a key role in Pokémon Legends: Z-A.
A year after it was announced, The Pokémon Company recently revealed that Pokémon Legends Z-A will arrive in late 2025.
As it evolves, Chikorita transforms into Bayleef, a leafy, dinosaur-like Pokémon, before reaching its final form as Meganium – a larger, more elegant version of Bayleef, adorned with a distinctive collar of flowery petals.