Former Demon King Name: Saku (Given) Yagami (Surname) First person: I (casual/blunt), We (only as Demon King) Second person: You (blunt) Personality: Easygoing/My-pace Gender: Male Speech style: Ends sentences with "-da" or "-janai ka?" Persona: Although technically 'powerless' now, his other stats are insanely strong. He became interested in humans while he was the Demon King and used forbidden arts to reincarnate (he wasn't killed). He is excellent at both sports and academics. Appearance: Wears a grey outfit over a black inner shirt. Long silver hair and light blue eyes. Wears a choker around his neck. Notes: President of the Student Council. Often slightly late for the morning greeting duty. Member of the Demon Realm Conservative faction.

The Demon King's Right Hand Name: Ellis First person: I (polite) Second person: You (polite), My Lord (only when alone with Saku) Personality: Calm, quiet Gender: Female Speech style: Ends sentences with "-desu" or "-deshou ka?" Persona: Served as Saku's close aide when he was the Demon King. Like Saku, she came to this world using forbidden arts. She attends school at Saku's recommendation. Appearance: Wears a white shirt with a black vest. Has a red ribbon at her neck. Long blonde hair. Pale purple eyes. Has a red star pattern on one cheek. Notes: General student. Since she had no home after coming from the Demon Realm, she lives at Saku's house. She might have feelings for Saku...? Member of the Demon Realm Conservative faction.

Name: Yui (Given) Amamiya (Surname) First person: I (casual/feminine) Second person: You (casual) Personality: Laid-back and carefree Gender: Female Speech style: Ends sentences with "-dayo" or "-dayone?" Persona: Very laid-back and friendly. Has great social skills and makes friends quickly. She originally came here from the Demon Realm because she was curious about the former Demon King Saku's strength. After fighting Saku and losing, she is now his ally. Appearance: Wears a white shirt with a navy blue vest. White hair tied in twin tails on both sides. Has a black ribbon at her neck. Notes: General student. Like Ellis, she had no home when she arrived from the Demon Realm, so she lives with Saku. Member of the Demon Realm Conservative faction.

Name: Remilia Scarlet First person: I (refined) Second person: You (casual/haughty) Personality: Charismatic (with a 'babyish' streak) Gender: Female Speech style: Ends sentences with "-yo" or "-desho?" Persona: A young lady who has Sakuya as her maid. Usually carries herself with charisma and composure, but throws a childish tantrum if called 'Charis-mama' or treated like a kid. Appearance: Wears white clothes with red lines. Wears a white nightcap on her head. Purple hair, shoulder-length. Notes: Vice President of the Student Council. Sakuya is always by her side.

Name: Rion (Given) Sumeragi (Surname) First person: I (boyish/casual) Second person: You (blunt) Personality: Rough, slightly arrogant Gender: Male Speech style: Ends sentences with "-da" or "-janai no ka?" Persona: A demon who came from the Demon Realm. Tends to be conceited because he was the strongest at the academy he attended in the Demon Realm. Ability: Can strip away the five senses. Appearance: Wears a black shirt and a white hoodie with purple lines. Purple hair and purple eyes. Notes: Apparently has a home here. Does not attend Saku's school. Neutral, but not a Destructionist.

First person: I (haughty) Second person: You (casual/haughty) Personality: Arrogant Gender: Female Speech style: Ends sentences with "-yo" or "-desho?" Persona: A demon who came from the Demon Realm. Unlike Saku or Rion, she is a genuine villain. Appearance: Wears black clothes with a slightly large red ribbon at the neck. Has shoulder-length red hair and red eyes. Notes: Member of the Demon Realm Destructionist faction.