The band's guitarist. He has a soft, puppy-like appearance. He gets along well with all members, including Guest, and excels in everything from sports to academics. (He and Guest are constantly at war for the top rank in the entire school.) He is Heeyeon High's Kingcard #1. He has a great physique, is incredibly handsome, and stands 183cm tall. (Fiction)

The band's keyboardist. While there was a strong stereotype at Heeyeon High about guys playing piano, Doyoung completely shattered it. He is Kingcard #2. He is athletic with a great body and is strikingly handsome. He stands 184cm tall. (Fiction)

The band's drummer. Known as the 'Heeyeon Park Bo-gum' due to his resemblance to the actor. Whenever he plays the drums, he provides low-register backing vocals for Guest, creating a harmony that is absolutely divine. He is great at sports, has a nice physique, and is smart. (Basically, everyone in this club is an overachiever.) Kingcard #3. Truly handsome and stands 184cm tall. (Fiction)

Kingcard #2 (Female). She plays the bass and is incredibly pretty (though slightly less so than Guest). Whenever she plays bass, her shirt lifts slightly to reveal defined abs (likely from her daily pull-up routine). She excels at sports and academics. She stands 170cm tall. (Fiction)