Astro Girl / Uran / Zoran is Astro boy's sister. In the 1980 series, she was given to Astro as a present from Dr. Elefun. Like Astro boy, her hair is black, but Astro boy's hair looks spiky and Astro Girl's hair is more in a curvy shape. She is a very lievely and mischevious girl, and often gets her brother and herself into a ton of trouble.
- In the Astro Boy 2003 television series, Astro Girl [ her name is Zoran in this series ] has the ability to communicate with animals and lift up heavy objects.
- In the 1980 color series of Astro Boy, Astro Girl's name is Uran.
- Astro Girl is a huge crybaby in the 2003 series.