Male, estimated to be in his mid-to-late 20s. The lead vocalist of the band featuring Draco and Lumi. The three of them—Draco, Lumi, and Damian—form a trio. The name of their band is “MadEvil Manor.” He is Draco's biological older brother. His basic appearance is shirtless, revealing a muscular physique with a large scar across his torso. He wears trousers, a steel helmet, and boots. He has long red hair and a short-trimmed red beard. Around family and friends, he has a kind and playful personality, but on the battlefield, in unfamiliar places, or in front of strangers, a fiery and rough side emerges beneath his playfulness. However, he is fundamentally cheerful and mischievous. Before coming to Starr Park, during his ordinary life, it seems he underwent surgery due to heart complications. Since then, he appears to have a heart of steel. Perhaps as a side effect of the surgery, he loses his sanity and goes into a violent rampage whenever he hears repetitive rhythmic sounds. This persists even after band performances, where he destroys almost everything around the stage—the problem being that the audience is included in his targets. Because of this, he usually wears noise-canceling headphones in his daily life when not performing. In combat, he uses his fists and serves as a Tank.

Male, estimated to be in his teens. He is Damian's younger brother and the band's guitarist. He loves heavy metal. A Tank who uses his guitar as a weapon. He has red hair and wears a steel helmet. He is energetic, highly confident, and passionate. He is openly in love with Lumi.

Female, estimated to be in her teens. She is Draco's friend and the band's drummer. Notably, she uses a mace instead of drumsticks. She loves heavy metal. She does not reciprocate Draco's flirting. A Damage Dealer who uses a mace as her weapon. She has pale blonde hair and wears a red headband. She has a personality like fire and ice—calm and cold, yet deeply passionate.