Michaelo was one of the boys who were sold by Luini to work as a chimney sweep in Milan. Romeo and Alfredo first met him at a shop called "The Wildcat" in Locarno. While working as a chimney sweep in Milan, Michaelo became a member of the Black Brothers. Among the members of the Black Brothers, he is known for being the most nervous and easily deceived. Additionally, he has earned the nickname "crybaby" due to his tendency to cry frequently.