Mythical Pokémon (Japanese: 幻のポケモン Illusory Pokémon) are a group of Pokémon seen so rarely in the Pokémon world that some question their very existence. This category mostly consists of event Pokémon, with the exception of Deoxys. Mythical Pokémon are a related, but separate group of Pokémon from Legendary Pokémon, generally featured more prominently in the legends and myths of the Pokémon world.
No Mythical Pokémon is required to complete the Pokédex.
Prior to Generation V, in non-Japanese media, Legendary and Mythical Pokémon were both considered to be Legendary.