All the Extraterrestrial Pokémon Deoxys A space virus fell to earth in a meteor, and was exposed to a laser beam. This caused the virus's DNA to mutate into the Pokémon Deoxys. Upon exposure to a meteorite, Deoxys's Forme will change. Deoxys has four formes, adapted for survivability in the wild, and its specialized formes have some of the highest base stats of any Pokémon. Its Attack Forme is adapted for combat against Pokémon native to earth, its Defense Forme is useful to protect itself from attack from Pokémon native to earth, and its Speed Forme is useful for fleeing. These formes in combination with its ability to regenerate lost body parts allow it to survive in an alien world. Because of its exoticism, it is generally asocial. Deoxys is not a unique phenomenon, and a Deoxys can communicate with others of its kind by creating an aurora. Clefairy The star-shaped Cleffa are said to have come to earth on meteorites. Wherever a meteorite lands, there is always a Cleffa near. Cleffa and their evolved forms, Clefairy and Clefable, dance in a ring on Monday nights, nights with a full moon, and on nights when meteor showers occur. Clefairy and its evolutionary relatives tend to make their habitat at impact sites, and Clefairy evolves into Clefable from a Moon Stone, further evidence that they are extraterrestrial in origin. Jirachi Unown Dialga Palkia Giratina Arceus Elgyem Beheeyem etc. I can't choose!