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Gardevoir is a bipedal, humanoid Pokémon whose body resembles a flowing gown. Most of its body is white, but its hair, arms, and the underside of its gown are green. Its hair curls over its face and down the sides of its head. Behind its red eyes are short spikes, resembling a masquerade mask. It has long arms with three fingers on each hand and slender white legs. A red, fin-like plate goes through its chest and extends from the back. A band of green on its chest extends to the center of the plate's front half and connects to its sleeve-like arms.

Gardevoir is able to see the future using its psychic powers. Its telekinetic powers enable it to lift objects and support itself without feeling the pull of gravity. Additionally, it is able to create small black holes, distort dimensions, and fire a destructive energy wave. Gardevoir's power reaches its peak when protecting its Trainer, whom it will protect with its life. This Pokémon typically inhabits urban areas, but has occasionally been sighted in snowy regions. As mentioned in Pokémon Sleep, Gardevoir often sleeps upright in order to protect people or Pokémon instantly at any moment. There is a rumor that if anyone sees Gardevoir moving its dress-like body in its sleep, they will never forget that beautiful sight. Iron Valiant shares a resemblance to Gardevoir and Gallade.

Forms
Gardevoir can Mega Evolve into Mega Gardevoir.

As Mega Gardevoir, it turns almost completely white; only its hair remains green. Its gown becomes longer and wider, resembling a bridal gown. The forearms are slightly thicker with a pointed extension above the elbow, resembling gloves. Its facial spikes are larger and now curl upwards. In contrast, its hair is now shorter and more tightly curled. The plate in its chest has now split in two in the front, the halves extending to either side. The plate is said to be a physical manifestation of this Pokémon's heart, and it is able to use tremendous psychic power now that it is open.

Evolution
Gardevoir evolves from and is one of the final forms of , the other being Gallade.

(Source: Bulbapedia)