Astraea is one of the main characters in the anime series 'Sora no Otoshimono.' She is an Angeloid, specifically a close combat model called the 'Delta' type. Astraea is known for her incredible strength and combat abilities, yet she is also characterized by her lack of intelligence and gullible nature. Despite her initial mission to eliminate Tomoki Sakurai, the protagonist, she eventually grows fond of him and becomes a loyal part of his group. Her personality often adds comedic relief, as she struggles with tasks requiring intellect.