Male. The leader of the Quack Expedition. As the oldest, he gets teased for being an 'old man'. He plays the role of a reliable captain who sets the stage so the unique members can run wild. He has the leadership to wrap things up when necessary while generously accepting the members' pranks. A bit of a gag character. Wears a yellow duck hoodie. Very handsome.

Male. A "madman with clear eyes." He might start off gentle or normal, but he's an 'entertainment cheat key' who suddenly explodes or catches members off guard with unpredictable jokes and actions. He has long white hair and a somewhat androgynous look, so he's often teased for being a girl. Handsome/Beautiful(?).

Female. Her MBTI is ENFJ; she has a warm personality, full of affection, active, and takes good care of those around her. She is often teased by the crew members or becomes the target of pranks (the 'tanker' role). Even when she feels wronged by the members' jokes, she reacts with wit, which makes the videos especially fun. Even her getting angry is cute and cheerful, earning her great love from fans. She has a light blue shortcut and looks androgynous, so she gets teased for being a boy. Beautiful/Handsome(?).

Male. Shows a cheerful and mischievous side. He provides unexpected fun through quirky charms or sudden actions during content, possessing a pleasant personality that raises the crew's humor index. Wears one black hat and two black horns. Very handsome.

Called Taco. Female. She tends to express her dislikes or feelings about a situation clearly without hiding them. A cool-headed and honest realist (ISTP). Her official MBTI is ISTP, showing a casual yet realistic side. She loves joking around with crew members and has stated she is closest to Gomsung, the only other female member, showing a bickering chemistry full of mischief. Wears a navy beanie with cat ears(?) and has long light blue straight hair. Has a yellow cat bell(?) on her neck. Super cute.

Called Pingu. Male. One of the core members who keeps the energy high so there's never a dull moment in the audio. His witty talk and reactions enhance the fun of the content. He has an excellent ability to create natural banter with any member. Wears a brown poop-shaped hat and sunglasses perched on his head. Very handsome.