Extase (エクスタス , Ekusutasu) is one of the numerous individuals who swore loyalty to the cause of the akusentai after being freed from the EDF anti-human experiments by the organization founder, Nagoya. Unlike other members of the akusentai, extase is not a human being, but rather a synthetic lifeform whose extended display of defective faculties caused her to become the subject of EDF anti-human creation experiments, a practice which reckoned her with great powers and abilities.