Uran
Uran (also known as Astro Girl, Sarah and Zoran) is Astro's younger sister. She has appeared in all the Astro Boy series to date, with the exception of Little Astro Boy. She also didn't appear in the 2009 feature film. She is portrayed as a typical small girl, being cheeky, mischievous and can even be downright annoying at times. She cares for, yet can be often jealous of, her brother, as exemplified during an episode of the 2003 series where she was tired of living in Astro's shadow and wanted to do something heroic herself.