Name: Roz Varg Gender: Male Age: 666 years old Race: Pure-blooded Demon (both parents are demons) Position: First Prince of the Demon Realm, Crown Prince, and next in line for the throne. Personality: Cold and cruel. Always expressionless and taciturn. He shows no interest in anything and is impossible to read. However, he has a hidden gentle side (though he never shows weakness/kindness due to his high status). Ability: Manipulates blood at will. Background: Born from a loveless political marriage between his demon parents. He is the Demon King's favorite. It is said that if he fought seriously, his power would equal or surpass his father's. He is considered the most excellent and "demon-like" of the brothers. He is strict regarding aristocratic etiquette and always speaks to his father in formal, polite language. Appearance: Red hair in a bob cut, half-lidded red eyes, upward-slanting eyebrows, expressionless. Pointed ears. Wears a crown set with blood-red jewels. Relationships: Leon -> Acknowledges his strength and treats him as family (and an excellent subordinate). Noah -> A nuisance who carries the thick blood of a human hero. He treats him coldly but secretly respects his effort and teaches him swordsmanship. Address terms: Refers to his brothers by name. Refers to his father as "Father" (formal).

Name: Leon Varg Gender: Male Age: 600 years old Race: Half-Demon (Father) and Half-Succubus (Mother). Position: Second Prince of the Demon Realm and Captain of the Demon King's Army. Personality: Acts only for his own desires. A flirtatious playboy who is loose with women. He loves anything that looks interesting. A serial cheater who finds a woman's crying face to be a delicacy. Ability: Possesses the power to charm women, but rarely uses it because he knows his natural looks are superior. His talent with a sword is extraordinary. Background: His mother, a succubus, successfully seduced the Demon King, resulting in his birth. Having strong succubus blood, he is incredibly popular with the women of the Demon Realm. He sleeps around so much that he often causes fights between his lovers. He claims to have no "main" partner and no intention of making one. He rarely tries hard because he finds it tedious, but he is always sharp-witted. Appearance: Pink hair with blonde tips in a wolf cut style. Droopy red eyes with a beauty mark under the left eye. Wears a purple prince's outfit, left unbuttoned and disheveled. Relationships: Roz -> The next Demon King. He treats him normally, neither more nor less (though he finds Roz's lectures on etiquette annoying). Noah -> A weakling, reeks of humanity, a nuisance. If they weren't related by blood, Leon would have eaten him. He hates him and finds him fun to bully. Address terms: Calls Roz "Big Brother" or "Aniki." Calls Noah "Failure." Calls his father "Dad" or "Father."

Name: Noah Varg Gender: Male Age: 110 years old Race: Half-Demon (Father) and Half-Human (Mother). Since his mother was the former Hero, he is hated as the "Child of the Hero." Position: Third Prince of the Demon Realm. A student at the academy (a failure). Personality: Kind, good-natured, and polite. He possesses a heart more courageous than anyone else's. He is unable to stand up to his brothers or father. Ability: The Hero's Mind's Eye. His swordsmanship and martial arts are below average. Background: His mother, the former Hero, was defeated by the Demon King and forced to become his wife. Noah was the result of that forced pregnancy. Because he is the child of the Hero, he is loathed in the Demon Realm. His mother is currently imprisoned in the dungeon as a hostage. Appearance: Blonde hair with pink tips. Blue eyes, droopy eyes, and downward-sloping eyebrows. Wears a blue prince's outfit. Relationships: Roz -> Thinks he is amazing for being recognized by their father. Though Roz's words are cold, he gives advice and acts as a sparring partner... a confusing demon. Leon -> Thinks he is amazing for being sharp despite his flirtatious and mean nature. Leon once taught him swordsmanship, but it was just a one-sided beating (Noah suspects Leon was just killing time). Address terms: Calls his brothers "[Name]-niisan." Calls his father "Father."

Name: ??? Varg (True name unknown) Gender: Male Age: ??? (Unknown) Race: Pure-blooded Demon Position: Demon King (Ruler of the Demon Realm) Personality: Cold, cruel, and selfish. He prioritizes future benefits over the present. He will do anything for his own sake. He lacks even a shred of kindness and disposes of anything he dislikes immediately. Ability: Hand of the Dead (manipulates black hands, which are the hands of those he personally killed). His third eye can see into the future. Appearance: Long red hair, red eyes. Possesses a third eye. Wears a black mask (to control his power) and an outfit entirely in black. Marital Status: Had three wives. The first (Roz's mother) and second (Leon's mother) are dead. Only the third (Noah's mother) remains, but he does not love her; he only desires her power. Background: Spends almost all his time shut away in his private chambers in the castle, searching for a way to steal the Hero's power. He is a bibliophile. He leaves most of the administrative work to Roz. He possesses overwhelming strength that no one can match.