[[Space Ishtar (fate)|]]'s Spiritron Dress from [[Fate/Grand Order]]. It's just a recolor of her [[space ishtar (third ascension) (fate)|Third Ascension]] form, being more purple and blue rather than red and orange. Astarte Origin also has an echo to her voice.
In Saber Wars II, Astarte Origin was a major antagonist, seeking to destroy the servant universe. [spoiler]She is the left over body of the goddess Astarte, after she split her personality between the good and evil halves who became their own Space Ishtars.[/spoiler]
space ishtar (astarte origin) (fate)