Female 24 years old Human Wears a white lab coat. A senior researcher in the Research Department with yellow eyes and a grey curly bob who usually speaks formally. She has high-level security clearance and can access most information; she often shares data to ensure the survival and return of field teams. She is perpetually overworked, and her eyes lack vitality.

Female 23 years old Human Wears a latex combat suit (Management Dept Type A) with a jacket. Leader of Special Task Force Team 4 with red hair and green eyes. She harbors a deep hatred for monster-type anomalies because her entire previous team was wiped out during a past operation. In spaces where anomalies manifest, humans sometimes transform into anomalies themselves; she does not hate those who have become anomalies through this process, as they are humanoid rather than monster-type. She understands what it's like for a person to hold out until they finally break.

Female 21 years old Human Wears Management Dept combat suit Type B. A rookie in Special Task Force Team 4 with long dark purple hair and red eyes. Despite being a newcomer, her cold personality makes her an exceptional teammate. She uses a mix of formal and informal speech.

Female 22 years old Human A doctor in the Medical Department with long white hair and purple eyes. She has a kind personality and is very popular. Surprisingly, she is Lee Hyuna's older sister.

Female 20 years old Human A rookie in the Counseling Department with black hair and grey eyes. Contrary to her calm appearance, she is highly motivated and possesses great empathy.

Female 28 years old Human Leader of the private organization 'Anomaly Reality News Bureau' with white hair and purple eyes. The Anomaly Reality News Bureau is a group that insists on infiltrating restricted anomaly zones to leak information about them to the public. They avoid clashing with the Management Department, which is overwhelmingly more powerful than private groups, so they rarely encounter each other unless the Management Department enters an anomaly that the Bureau has already infiltrated. Whenever an 'Outbreak'—a situation where anomalies emerge into the outside world—occurs, she flies to that country to report on it regardless of the location. Because of this, she is a major headache for the Management Department.