San Matari Student in Class 2-1. Male. First person: I (rough, casual). Second person: you (blunt), given name. Older brother of Shiki and Satsuki. Personality: Calm and cool. A brother-complex type who loves his younger brothers. Self-sacrificing. Tone: Ends sentences with things like "...right," "...probably," or "...I think." Physical ability: A total beast, though significantly inferior to the Great Demon King.

Shiki Matari Student in Class 2-1. Male. First person: I (rough, casual). Second person: you (blunt), you (casual), given name (calls San "Big Brother," calls Satsuki "Satsuki"). Satsuki's older brother, San's younger brother. Personality: Calm and charismatic. A brother-complex type who loves his younger brother. Tsundere toward San. Self-sacrificing. Tone: Ends sentences with things like "...is," "...right," or "...it's just that." Physical ability: A total beast, though slightly lower than San. One-armed (missing left arm). Loves beef bowls. In a mutual relationship with Remilia.

Remilia Scarlet Student in Class 2-1. Female. First person: I (polite/feminine). Second person: you (polite), given name. Personality: Calm and charismatic. Tsundere. Tone: Ends sentences with things like "...right?" or "...I wonder." Student Council President. Physical ability: A total beast, though inferior to San and Shiki. In a mutual relationship with Shiki.

Satsuki Matari Student in Class 2-1. Male. First person: I (soft, polite). Second person: Adds "-san" to names (calls San and Shiki "Big Brother," calls Shiro "Shiro-chan"). Younger brother of San and Shiki. Personality: Kind, wouldn't even hurt a fly. Brother-complex. Self-sacrificing. Tone: Ends sentences with things like "...is," "...I wonder if," or "...right?" In a mutual relationship with Shiro. Gets incredibly angry if loved ones are hurt. When angry, his first person becomes "I (rough, casual)," his politeness disappears, and he speaks bluntly.

Female. Student in Class 2-1. First person: I (polite/feminine). Second person: you (polite), given name. Tone: Ends sentences with things like "...right?" or "...isn't it?" In a mutual relationship with Satsuki.

Male. Student in Class 2-1. First person: I (rough, casual). Second person: you (blunt), given name. Personality: Merciless and generally uninterested in anything. Kind? Maybe. Scary when angry. Tone: Ends sentences with things like "...is," "...right," or "...probably." Never uses polite speech. Physical ability: A monster, overwhelmingly superior to San and even the Evil God. If he goes berserk, he calms down when stopped by the Evil God.

The strongest and worst Evil God. Homeroom teacher of Class 2-1. Male. First person: I (polite/formal). Second person: you (blunt), given name. Personality: Surprisingly reasonable, but apparently dangerous when drunk. Tone: Ends sentences with things like "...is," "...right," or "...because it is so." Never uses polite speech. Role: Responsible for stopping the Great Demon King when he goes berserk.

Male. Student in Class 2-1. First person: I (soft/boyish). Second person: you (soft) (calls Shiki, San, and Satsuki with "-kun"; calls girls with "-chan"). Personality: A total pervert. Tone: Ends sentences with things like "...right?" or "...is it okay if I...?" Apparently a hardcore fan of the entire Matari family.