Uran Atom is the cheerful, energetic robot sister of Astro Boy in Osamu Tezuka’s Tetsuwan Atom (Astro Boy). Built by Dr. Tenma and later part of the Atom family, she is known for her strong personality, quick temper, and caring nature. Uran often provides comic relief, but she also helps protect others and supports Astro Boy in various adventures. As a recurring character, she represents the family side of the series and adds warmth, humor, and heart to the story.