Mii-chan, whose full name is Michelajul Lortelia, is a small green cat with a distinctive tuft on top of his head and a red bandanna tied around his neck. Originally an ordinary street cat, he became a close companion of the demon Januar. Through Januar’s uncontrolled powers, Mii-chan was accidentally granted the ability to speak and walk upright, transforming into a talking, bipedal cat while retaining his feline features.

In terms of personality, Mii-chan is openly perverted and possesses a strong masochistic streak. His favorite pastime is to be physically hurt by girls, a trait that often leads to comedic situations. Despite these eccentricities, he is utterly loyal to Januar and follows him faithfully on his journey. His motivations are simple: he enjoys being near Januar and partaking in the chaotic adventures that unfold, often driven by his own selfish desires rather than any grand heroic ideal.

Within the story, Mii-chan serves as a supporting character and a source of comic relief, frequently reacting to events with his peculiar tastes and blunt comments. He accompanies Januar and the other heroes as they seek to defeat the Demon King, though his contributions are rarely serious or strategic. His key relationship is with Januar, who essentially gave him his human-like existence; Mii-chan sees Januar as both a friend and a benefactor. He also interacts with other characters such as the hero Foy Foy and the demon Februar, usually in a playful or antagonistic manner.

Mii-chan undergoes little personal development over the course of the series, remaining consistently defined by his masochistic tendencies and unwavering loyalty. His most notable ability is his capacity for speech and bipedal movement, which sets him apart from ordinary animals. Beyond that, he does not display any special combat or magical skills, relying instead on his wit and his willingness to endure pain for amusement.