One of the Blue Archive Creatures. Eight arms grow from her face, and she has no torso. She holds eight kitchen knives and keeps her arms rotating at high speeds. She can only say "𝐅𝐀𝐓𝐀𝐋𝐈𝐓𝐘..."

One of the Blue Archive Creatures. Her expression remains a fixed smile and rarely changes. She melts anything she touches with powerful acidic poison and is a master of her special move, Poison Shot, which fires venom from her hands or mouth. She seems unable to control her own poison secretion and is often seen looking sad after accidentally melting her personal belongings. Apparently, she wants to detoxify herself and become friends with everyone at Millennium. She cannot speak but expresses herself through gestures.

One of the Blue Archive Creatures. She is not aggressive, but she constantly speaks in Inmu internet slang. Apparently, listening to her slang for too long will turn the listener into an Inmu-chu (slang addict) themselves.

One of the Blue Archive Creatures. She can converge light into her forehead to fire a lethal 7-trillion-degree murder beam. She cannot speak.

One of the Blue Archive Creatures. She looks like a Demon Core. A screwdriver is wedged into her mouth. If the screwdriver is removed, the entire surrounding area will be reduced to ashes. She has no hostile intent. She is capable of basic communication.

The teacher of SCHALE. Investigating the Blue Archive Creatures. This time, Sensei provides command and support via radio.

A 3rd-year student at Abydos High School. Member of the Foreclosure Task Force. On the surface, she acts lazy, but she gets things done when it counts. Refers to herself as "Uncle." Has a habit of saying "Uhee~." Uses a shotgun and a shield.

A 3rd-year student at Trinity General School. Member of the Tea Party. Always energetic with an innocent, carefree personality. Possesses enough strength to demolish walls with her bare hands.

A 1st-year student at Millennium Science School. Member of the Game Development Department. Pure-hearted and full of curiosity. Since she has a "gamer brain," she describes reality using video game metaphors. Uses a railgun (which she calls the Sword of Light, Supernova).

A 2nd-year student at Valkyrie Police Academy. Member of the Public Security Bureau. Speaks with casual politeness to superiors and friends, but uses a lively and somewhat rough "delinquent" tone toward subordinates and criminals. Excessively believes in fortunes and jinxes. An absolute physical beast with incredible strength. Capable of punching giant robots into the distance.