Supergirl (DC Comics) in space.
Adapt to vacuum of space
The power to
adapt to vacuum of space unaided. Variation of Environmental Adaptation.
User is able to survive and adapt to the vacuum or space unaided and are able to withstand atmospheres (heat intensity and any poisonous chemical elements), cosmic media (radiation), strange gravity (even sometimes that of a black hole), and lack of air.
Roger Smith (American Dad!) surviving in the vacuums of cold space.
Hal and Jeff (Bowser's Kingdom)
Wirrn (Doctor Who) live in space for most of their lives, using a special enzyme to recycle carbon dioxide back into oxygen.
Frieza (Dragonball Z) can survive in the vacuum of space.
Guiron (Gamera vs Guiron) has specially desgined lungs for space travel
Terra, Ventus, and Aqua (Kingdom Hearts) can use their Keyblade Armor to survive in space.
Due to being an alien cat, Snookey Wookums (Krypto the Superdog) can survive in the vacuum of space.
Stitch (Lilo and Stitch), along with the rest of his cousins, doesn't require equipment to survive in outer space.
Lapis Lazuli (left) and Steven Universe (right) (Steven Universe) can both survive in the vacuum of space.
Cosmonaut (Valkyrie Crusade)