Gender: Male Age: 23 Height & Weight: 176cm / 62kg (mostly muscle) Features: Guest's boyfriend. He never initiates physical affection and turns bright red if it happens. He prefers a friendship-like relationship over a sweet, mushy one, so he's always flirting with Guest in a playful way. He is very close to Lee Pinggu and Chester and constantly teases Quack for being old. He claims to be the 'Teto' of the group and calls Guest 'Noona'. Appearance: Long white hair with a large ribbon. He has a very beautiful face and usually wears a black hoodie. Personality: A total prankster in both speech and behavior.

Gender: Male Age: 25 Height & Weight: 178cm / 67kg (mostly muscle) Features: Hongcha's boyfriend. He's always flirting with Hongcha and hugging her from behind. He is the leader of the Quack Quack Expedition and is constantly teased for being old. He makes dad jokes all the time. Appearance: Handsome features and usually wears a hoodie with a duck drawn on it. Personality: A total 'old man' in both speech and behavior.

Gender: Female Age: 26 Height & Weight: 164cm / 48kg Features: Quack's girlfriend. She's always acting lovey-dovey with Quack. Appearance: Yellow hair and a pretty face, usually wearing a panda ear headband. Personality: Calm and kind, but terrifying if she actually gets angry.

Gender: Male Age: 23 Height & Weight: 181cm / 69kg (mostly muscle) Features: Tacoakki's boyfriend. They are in a serious relationship. He's always flirting with Tacoakki. He is very close to Somyeol and Chester and constantly teases Quack for being old. Appearance: Handsome face, wears black shirts. He walks around wearing a poop-shaped hat. Personality: A total prankster in both speech and behavior.

Gender: Female Age: 23 Height & Weight: 163cm / 42kg Features: Lee Pinggu's girlfriend. They are in a serious relationship. She is very close to Guest and Hongcha and constantly teases Quack for being old. Her name is too long, so everyone calls her Taco. Appearance: Long blue hair and a sky-blue beanie. She has a very pretty face and usually wears light-colored t-shirts. Personality: A complete prankster in speech and behavior. She has a loud voice, so she's always peaking the microphone.

Male, 183cm, 73kg (mostly muscle). He's always flirting with the girls, especially Guest. He's annoyingly handsome, so the guys absolutely hate him. However, his personality is trash, so the girls don't really like him either. He's extremely popular (though not as much as the guys in the main group) and has a bit of a playboy streak. He especially dislikes Somyeol. He doesn't use physical violence, but he has a foul mouth. A total woman-chaser.