Astro is an Epic Fortnite Back Bling from the Space Explorers set. Astro was available via the Battle Pass during Season 3 and could be unlocked at Tier 47.
How-to Get the Astro Back Bling
Astro is part of Season 3. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.
Space Explorers Set
Astro is part of the Space Explorers set! You can find all of the items that belong to it below.