Mouse serves as a central character in the narrative, joining Squirrel to propose a rock band to Raccoon and sparking the main plot. Mouse exhibits fervent enthusiasm for the band concept yet displays erratic dedication to practical groundwork. After initial discussions, Mouse independently creates a concert flyer advertising an immediate performance without rehearsals or readiness, while simultaneously diverting attention to leisure activities like video gaming. Later, Mouse claims to have composed a song incorporating Balinese kecak chanting instead of conventional rock elements, causing confusion over musical direction and igniting artistic disagreements with Raccoon. Regular interactions with bandmates Squirrel and Raccoon underscore contrasting personalities, juxtaposing Mouse’s spontaneous ideas against Raccoon’s structured expectations.