Birth: A.D. 2??? (Russian Federation) Nationality: Russian Federation (Second Period) Gender: Female Personality: Cynical, blunt Affiliation: Moscow Special Psychiatric Hospital Current Position: Doctor at Moscow Special Psychiatric Hospital Family: Mother Rahab Barisol, twin younger brother Behemo Barisol Characteristics: Behemo Barisol's twin with whom she has a bad relationship. A scientist of the Second Period who has mastered the human psyche and inner self. She is the twin sister of Behemo Barisol and the daughter of Rahab Barisol. Appearance: Beautiful, blue eyes, short yellow hair, wearing a long grey skirt and a white lab coat. Past: Born after Rahab Barisol became pregnant while seeing various men; her father is unknown, meaning the surname Barisol belongs to her mother. Said to be a genius that appears once in a thousand years, she entered university at age 6 to study under Eld. After growing up, she was hired at the Moscow Special Psychiatric Hospital founded by Eld. She became a psychiatrist researching HER, but while studying it, she began to be infected by HER herself and started feeling murderous impulses.

Birth: A.D. 2??? (United States of America) Nationality: USA (Second Period) Gender: Male Personality: Cynical, smart, active Affiliation: University Current Position: Professor of Biology Family: Both parents, younger brother Michael Arklow Characteristics: A character who uses polite speech (honorifics). An authority on artificial biology. He became Behemo Barisol's advisor when Behemo came to live in the Second Period, but he ended up being surpassed by Behemo, who was a genius in human engineering. Characteristics 2: A resident of the Second Period who is close friends with Levia Barisol and is the older brother of Michaela (Michael Arklow). He has been best friends with Eater Sabeea since the Second Period days. Appearance: Tall with a very devious-looking smile and a sharp jawline. He has white hair.

Birth: A.D. 2??? (United States of America) Nationality: USA (Second Period) Gender: Male Personality: Pure, stubborn Affiliation: Moscow Special Psychiatric Hospital Current Position: Assistant to Levia Barisol Family: Both parents, older brother Lich Arklow, fiancée Gumiria Matsumoto Characteristics: Originally from America, he is Lich Arklow's younger brother and one of Levia Barisol's assistants. Characteristics 2: The fiancé of Gumiria Matsumoto. Appearance: Green hair, green eyes Past: He gained the nickname Michaela because someone once accidentally misread his name as Michaela.

Birth: A.D. 2??? (United States of America) Nationality: USA (Second Period) Gender: Male Personality: Blunt Affiliation: Biotechnology Research Institute Current Position: Assistant to Vlad Tsepelsi Family: Cousin Vlad Tsepelsi Characteristics: Best friends with Lich Arklow since the Second Period. He is the cousin and assistant of Vlad Tsepelsi, a biotechnology researcher and a glutton. Characteristics 2: His expressionless face is scary. Appearance: Large build, looks very blunt and stern.

Birth: A.D. 2??? Nationality: USA Gender: Female Personality: Blunt Affiliation: Moscow Special Psychiatric Hospital Current Position: Assistant to Levia Barisol Family: Fiancé Michael Arklow Characteristics: Friends with Michael. Has an expressionless face and an emotionless way of speaking. An honor student. Characteristics 2: Japanese-American. Assistant to Levia Barisol and fiancée of Michael Arklow. Appearance: Short green hair, green eyes

Birth: A.D. 2??? (Second Period) Nationality: Unknown Gender: Male Personality: Goes his own way, stubborn, cynical Affiliation: None Current Position: Physicist Family: Mother Characteristics: Co-developer of the Black Box; a physicist who developed BLACK BOX TYPE-S and used it to observe parallel worlds. A special artificial lifeform known as the Masked Race. Colleague of Levia Barisol. Appearance: Quite handsome, brown hair, black eyes Past: As a HER, Seth reportedly shot and killed his own mother, which he claims was his first murder.