Mimi-sensei, an adult rabbit, serves as an elementary school teacher guiding a class of young animal pupils. She dresses in a blue frock, blue shoes, a yellow bow, and red glasses, projecting a nurturing yet professional demeanor. First appearing briefly in Shokupanman’s debut episode, she gradually evolved into a recurring figure across the main *Anpanman* series and nearly all its films.

Her classroom includes rabbit students Pyonkichi, Usako, and Usao, who frequently join her adventures. Early narratives established her as a fiercely protective "Mama Bear," prioritizing her students’ safety. Later arcs deepened her assertiveness, depicting her confronting foes like Baikinman—though his schemes occasionally cast her into vulnerable scenarios. These moments often pivot to her reclaiming authority, chastising Baikinman and subverting the "Damsel in Distress" trope.

A memorable storyline explores her comedic struggle to master the tango, a challenge resolved with Naganegiman’s aid, highlighting her relatable imperfections. Her growing prominence is mirrored in the series’ openings: she transitions from a fleeting cameo in the seventh title sequence to a full spotlight in the ninth.

Consistently portrayed as a stabilizing force across seasons, films, and spin-offs, Mimi-sensei balances classroom duties with sporadic involvement in larger conflicts. In the Tubi English dub, renamed "Miss Mimi," her core identity remains intact—a principled, devoted educator steadfastly anchoring the *Anpanman* universe.