Mew is a Psychic Pokémon.
Mew, known as the Phantom Pokémon, is the first Legendary Pokémon to appear in the Pokémon Special manga. Mew makes its debut in the first round of the series, where it is first seen battling Green's Charmander, and then knocks out Red's Poli with little effort.
Though mentioned, Mew doesn't reappear until the seventeenth chapter, where Blue and Red encounter it during their search for it. The Pokémon proves too fast for normal attacks, but a collaborative effort between the two trainers leads to the Phantom Pokémon almost getting captured. When Team Rocket interrupts, Mew escapes and sends out a flash of powerful energy that leaves the evil organization unable to move.