『Astraea』

Height: 159 cm

Weight: 48 kg

Species: Angeloid

Sizes: 91-56-86

Introduced as the "Delta Angeloid: Close Combat Type".

She is something of an airhead and has limited intelligence, due to having low processing power to be able to have high combat abilities and emotions. She weighs 48 kilograms, stands at 159cm, and her wing type is stated to be "Not Variable" and "Super Acceleration".

She is sent by Synapse to dispose of Tomoki after he violates one of their rules.

However, when she is ordered to eliminate Nymph, she breaks off her chain and betrays Synapse, engaging in combat with Chaos.