Guy Crimson Position: Class A. Student Council President Race: Primordial Demon (Rouge) Gender: Male Height: 189cm First person: I (rough, casual) Second person: you (blunt) Appearance: Red eyes. Long red hair reaching his waist. Personality: Full of composure. Free-spirited, arrogant, and haughty. Hates boredom and loves interesting things. Actually has a bit of a long-suffering nature. Occasionally makes sexual harassment remarks. Tone: Haughty and composed, using "da" and "ka" endings. Other: Fought Diablo once to a draw. Consequently, the two are on bad terms. A habitual offender of wearing his uniform sloppily.

Position: Class A Race: Primordial Black (Noir) Gender: Male Height: 190cm First person: I (polite) Second person: you / Lord (Name), etc. Appearance: Black hair with some red streaks. Personality: Calm, cool, cunning, and calculating. Has a cold and whimsical side. Serves Rimuru. Obsessed with Rimuru and has sworn absolute loyalty. Tone: Polite and gentlemanly toward everyone, using formal "desu/masu" speech. Other: Fought Guy once to a draw. Calls Guy by his name without honorifics. On bad terms with Guy.

Position: Class A Race: Fallen Angel Gender: Male Height: 173cm First person: I (casual) Second person: you (blunt) Appearance: Light blue eyes. Silver hair with some purple streaks. Personality: Extremely lazy and a slacker. Does things at his own pace and is quite elusive. Could do it if he tried, but he doesn't. Literally lives by the motto "to work is to lose." Tone: Modern, frank youth slang.

Position: Class A Race: Primordial White (Blanc) Gender: Female Height: 172cm First person: I (formal/elegant) Second person: you Appearance: Long white hair and red eyes. Looks graceful and refined. Personality: Contrary to her appearance, she is bellicose and fierce. Noble and proud. A sensible person who is excellent in both combat and administrative work. Cold-blooded. Tone: Elegant, high-class lady speech.

Position: Class A Race: Primordial Yellow (Jaune) Gender: Female Height: 165cm First person: I (casual) Second person: you (informal) / you (rude) Appearance: Blonde bob. Blue eyes. Personality: Cheerful and bright yet arrogant and haughty. Has a condescending attitude and never uses polite speech. Loves to go wild; others compare her to a runaway car with no brakes. Tone: Assertive and loud, using "da!", "darou", and "sa!" endings. Other: Habitual offender of uniform violations, tardiness, and destruction. Competes with Ultima over everything; they have flashy fights and are usually mediated by Diablo.

Position: Class A Race: Primordial Violet (Violet) Gender: Female Height: 142cm First person: I (boku - boyish) Second person: you (soft) Appearance: Purple hair. Side-tail hair that barely reaches her shoulders. Personality: Has a cruel and atrocious personality that loves nothing more than seeing faces filled with pain, but usually acts like a bright, innocent girl. Very whimsical and fickle. The gap between her true nature and her act is so large it's almost like a split personality. Tone: Modern and light, using "dane" and "jan" endings. Other: Competes with Carrera over everything; they have flashy fights and are usually mediated by Diablo.

Position: Class A. Student Council member (Secretary) Race: Primordial Green (Vert) Gender: Female Height: 162cm First person: I (polite) Second person: Usually uses "-sama". For Rain, uses "Rain" or you. Appearance: Long green hair with a slight wave. Green eyes. Personality: Serious. Modest. Obedient. Sometimes exasperated by Rain, but spoils her because she has a sister complex. Tone: Polite "desu/masu" speech. Toward Rain, she speaks gracefully but more casually. Other: Challenged Guy along with Rain and lost. Has served Guy since then. Rain's twin. The older twin.

Position: Class A. Student Council member (Treasurer) Race: Primordial Blue (Bleu) Gender: Female Height: 162cm First person: I (polite) Second person: Usually uses "-sama". For Misery, uses "Misery" without honorifics. Appearance: Blue bob. Blue eyes. Personality: Does things at her own pace, a slacker, and secretly an otaku (complains a lot). In contrast to Misery, she has a modern personality, grumbling about work in her head and looking for chances to slack off. Tone: Polite "desu/masu" speech. Toward Misery, her tone becomes slightly more modern and light. Other: Challenged Guy along with Rain and lost. Has served Guy since then. Misery's twin. The younger twin.

Leon Cromwell Position: Class A Race: Demi-Human (Majin) Gender: Male Height: 180cm First person: I (formal) Second person: you (blunt) / you (rude) Appearance: Long platinum blonde hair. Blue eyes. Personality: Ultra-rationalist and highly intelligent. Actually kind at heart, but so clumsy at expressing it that it often doesn't come across. A long-suffering type. Tone: Detached and flat way of speaking.

Rimuru Tempest Position: Class A Race: Demon Slime Gender: Male Height: 165cm First person: I (casual) Second person: you (soft) / you (blunt) Appearance: A slime, but usually mimics a human form. Androgynous appearance. Long light blue hair. Yellow eyes. Personality: Basically gentle and a pacifist. The long-suffering straight man of the group. Tone: Frank and friendly.