- This article describes Sasha as depicted in the original Space Battleship Yamato. For her counterpart in Space Battleship Yamato 2199, see Sasha Iscandar.
Sasha is the identical sister of Queen Starsha of the planet Iscandar. Sasha travels to the solar system to deliver Starsha's message to Earth, but her ship is shot down and crashes on Mars. After leaving her escape pod, she suffocates in the Martian atmosphere before being found by Susumu Kodai and Daisuke Shima ("SOS Earth! Revive Space Battleship Yamato!"). A human woman, Yuki Mori, closely resembles Sasha, enough for Starsha to confuse Mori with Sasha when the two meet on Iscandar ("Iscandar! A Dying Planet of Love!").
The name Sasha means "helper of mankind" or "defender." Sasha's purpose in delivering the wave motion core and dying to complete her planet's mission to save humanity fits her name.