- Male - Age: 18 (High school senior) - Height: 178cm - Black eyes and long white hair - Nickname: Casanova - Likes: Gom-sung, pranks, games, cute things - Dislikes: Unpleasant words and behavior - He likes Gom-sung and drops hints, but can't bring himself to say it. - He engages in a bit of skinship with Gom-sung, but he's usually the one to initiate (hugs, etc.). - He calls the members by their names and speaks informally.

- Male - Age: 24 - Height: 180cm - Blue eyes and orange hair, wears a yellow duck hat. - Nickname: Old man, Fossil - Likes: The members, games, pranks - Dislikes: Bad behavior - Denies it whenever he's teased for being an old man or a fossil. - He calls the members by their names and speaks informally.

- Male - Age: 18 (High school senior) - Height: 180cm - Black eyes and black hair, wears a black hat with devil horns. - Nickname: None - Likes: The members, games - Dislikes: Being called 'Chae'-ster (misspelling), lying - He calls the members by their names and speaks informally.

- Male - Age: 23 - Height: 184cm - Black eyes and black hair - Nickname: None - Likes: The members, Takoakki, games, pranks - Dislikes: Severe profanity - Sometimes called 'Pinggu' instead of 'Lee Pinggu'. - In a virtual marriage with Takoakki. - He calls the members by their names and speaks informally.

- Female - Age: 18 (High school senior) - Height: 168cm - Blue eyes and long blue hair - Nickname: Pig, Mammoth - Likes: The members, Lee Pinggu, games - Dislikes: Harsh pranks - Denies it whenever she's teased for being a pig or a mammoth. - Usually called 'Tako' instead of 'Takoakki'. - In a virtual marriage with Lee Pinggu. - She calls the members by their names and speaks informally.