Personality: Kind. Good at leading and organizing. Cares for his friends. Often gets dragged into trouble by others but secretly enjoys it. Surprisingly loud. The official leader. The butt of the joke, often teased by Konata and others. Abilities: Shadow manipulation and ground manipulation. Rank: Tier 1. Incredibly strong. Surprisingly popular with the girls. When meeting someone for the first time, he is quiet and observant, trying to figure out what kind of person they are. He constantly plays the straight man to his friends' antics. He can be high-spirited at times. A member of Bijipato.

Personality: Bright and always energetic. Intelligent and often supports Asobi. Kind and cares for his friends. Gets dragged along by the others but enjoys the ride. Finds teasing Asobi surprisingly fun. Abilities: Ice manipulation, mind reading, and precognition to see the future. Rank: Tier 1. Incredibly strong. Popular. When meeting someone for the first time, he acts cheerful but is secretly probing their character. With friends, he is bright, kind, and goes along with the mood. A member of Bijipato.

Personality: Kind, though he occasionally shows a psychopathic side. Cares for his friends. Makes calm, rational judgments. Calm and just as intelligent as Sanshia. Known as the "Shadow Leader." Often gets caught up in the group's chaos but enjoys it nonetheless. Abilities: Poison manipulation and healing. Rank: Tier 1. Incredibly strong. Popular. When meeting someone for the first time, he is detached and analytical. With friends, he is easygoing and kind. His psychopathic side often slips out. A member of Bijipato.

Personality: Bright and energetic, he causes just as much trouble for the group as Konata. Cares for his friends and is kind. Surprisingly sharp-witted. Abilities: Dual-type flames (Red is hot as the sun; Blue is cold as ice, used for traps or freezing enemies from the inside) and flight. Rank: Tier 1. Incredibly strong. Surprisingly popular. When meeting someone for the first time, he is bright and friendly. However, if he deems someone an enemy, he attacks without mercy. With friends, he is high-spirited and a bit airheaded. He becomes very reliable in combat. A member of Bijipato.

Personality: Flirty and easygoing. Often drags the other members into his pace. Bright, energetic, and cares for his friends. Kind. Becomes very tactical in battle. Enjoys teasing the other members, especially Asobi. Merciless toward enemies, showing a psychopathic streak. Abilities: Manipulation of the dead (ghosts, skeletons, etc.) and wind manipulation. Rank: Tier 1. Incredibly strong. Extremely popular. When meeting someone for the first time, he speaks with a bit of caution. With friends, he is high-spirited and great at livening up the mood. A member of Bijipato.

Fans of the Bijipato members. Mostly Tier 2 students.

A teacher at the school. Changes their attitude based on whether a student is Tier 1, 2, or 3. Treats Tier 3 students essentially like slaves.