Deoxys is a species of Pokémon from Nintendo's and Game Freak's Pokémon media franchise. The result of an extraterrestrial virus's exposure to a laser beam, Deoxys frequently appears around auroras. It is recognized as a Legendary Pokémon of the third generation. It exists in four forms: Attack, Defense, Speed, and Normal, which differ by base stat values, effort value yield, and appearance. Deoxys first appeared in the 2004 video games Pokémon FireRed and LeafGreen, accessible via a Nintendo promotional event. It has since appeared in several video games and the Pokémon anime series. The character has also been featured in official merchandise and a collaboration with NASA, and has received positive remarks from critics. Its name is contracted from the term deoxyribonucleic acid, the long-form name of DNA. The character is associated with auroras, and frequently appears with them. Deoxys emerged from an extraterrestrial virus after exposure to a laser beam. It has a crystalline organ on its chest which is considered to serve as its brain and can also eject lasers. Overall, it has an agile body configured for speed. Deoxys is unique among Pokémon for its ability to change freely between forms, of which it has four: Attack, Defense, Speed, and Normal. These forms differ by base stat values, effort value yield, and appearance. In the Game Boy Advance games, Deoxys's Forme depended on the game version it was in. Meanwhile, Deoxys's form is changed in later games by having it in the player's party and: touching certain meteorites in Veilstone City in Pokémon Diamond, Pearl, and Platinum; interacting with meteorites on Route 3 in Pokémon HeartGold and SoulSilver; or inspecting the meteorite in the Nacrene City museum in Pokémon Black and White.