From the Super Mario Wiki, the Mario encyclopedia
Shiny Paratroopas are a semi-common species of Koopa Paratroopas that appears in Paper Mario: Sticker Star. They look like normal Paratroopas except with an added sheen, similar to shiny stickers. A Shiny Paratroopa's only attack is dive bombing into Mario. If a Shiny Paratroopa is hurt during battle or a First Strike is landed on it before a battle ensues, it will lose its wings and become a Shiny Koopa Troopa.
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