Deoxys is one of the rarest Pokémon that can be found in Pokémon GO, and for the time being, only its Normal form has a Shiny variation. Shiny Pokémon are difficult enough to come by as is, but Deoxys' rarity makes it even harder for players to find a Shiny variation in Pokémon GO when compared to most other Pokémon. In February 2022, however, all four versions of Deoxys will have a Shiny variation in Pokémon GO.
While Deoxys in Pokémon GO is stuck in the form it is found in, the standard games see Deoxys change forms with the help of a meteorite. Whenever players interact with the meteorite, a Deoxys is given the ability to change forms that will boost certain stats. For example, Deoxys attack form typically increases its Attack and Special Attack stats, while the Defense form increases the Defense and Special Defense stats. In both cases, these forms decrease the opposing Deoxys form's stats as well.
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For a time, Deoxys being trapped in a singular form meant that players could only have access to the Shiny variation of the Normal form, while the Attack, Defense, and Speed forms were all limited to their standard variations. However, new five-star raids in Pokémon GO will allow players to catch the Shiny variation of each of Deoxys forms, but for a very limited time. Each Deoxys form will have its own three-day span to be caught in a Shiny form, but only after the raid is beaten in Pokémon GO.
Like all Shiny Legendary Pokémon in Pokémon Go five-star raids, the only way to figure out if a Deoxys Form is shiny or not is by beating Deoxys to ready it for capture. Shiny Legendary Pokémon only reveal their alternate colors once the Pokémon has been defeated, so it's impossible
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