Ikaros is a busty gynoid, a humanoid robot designed closely to look like a female human being, later known as the Angeloid. She fell from the sky where he meets Sakurai and makes him her master. Although generally submissive, melancholic and subservient, she can get quite aggressive especially when Sakurai is in danger. During combat, she is able to use Aegis, an energy shield sphere; Artemis, an array of explosive energy projectiles fired from her wings; and Apollon, a bow that can fire arrows of mass destruction.