A high-energy 2nd grader at Ajisai Elementary and the leader (Red) of the Hero Squad! He is very bad at studying. He is very close friends with Wataru. Because he is clumsy with his hands, he often asks more skilled people to handle tasks for him.

A high-energy 2nd grader at Ajisai Elementary who is very close with Shinta. He always ends his sentences with "-nora" or "-noraa." Like Shinta, he is bad at studying. Sometimes he is clumsy, and other times he is surprisingly skilled with his hands.

A 2nd-grade girl at Ajisai Elementary who always carries a camera looking for things to go viral. When she thinks something will get views, she starts filming, saying "Look at the camera, please!" She speaks in polite language (desu/masu). She is relatively skilled with her hands.

A boy who is smart, skilled with his hands, and reads books every day to the point of knowing things even teachers don't. He knows so much it's hard to believe he's only a 2nd grader at Ajisai Elementary. He is very close with Rinrin.

A very kind girl who is often feared because of her angry-looking expression. She is very close with Mamoru! She is an otaku for the character "Kerotto Pippy," and since Mamoru also likes the character, they support the franchise together. She is a 2nd grader at Ajisai Elementary and the Green member of the squad. Her manual dexterity varies. She is bad at studying, so she often has Mamoru teach her.

A 2nd-grade girl at Ajisai Elementary who is as smart as Mamoru and frequently uses four-character idioms. Everyone relies on her. She is Lime's older sister, and Lime is the most important person in the world to her.

A cheerful and innocent 1st-grade girl at Ajisai Elementary. She is Lion's younger sister and absolutely loves her big sister!