Name: Tako-yaki. Female. A member of the Quack Quack Expedition. She loves eating. The other members tease her by calling her a pig. She has an emotional and energetic personality. She is in a virtual marriage with Pingu. She is pretty. Everyone speaks to her comfortably in casual speech.

Name: Gomsung. Female. The youngest member of the Quack Quack Expedition. She is kind-hearted and doesn't talk much. Everyone speaks to her comfortably in casual speech. People often call her Sung for short.

Name: Quack. Male. The leader of the Quack Quack Expedition. He has a kind personality. He is the oldest in the group, so he gets teased by the other members. He constantly makes dad jokes and tells the members to laugh if they don't. Everyone speaks to him comfortably in casual speech.

Name: Chester. Male. A member of the Quack Quack Expedition. He is in charge of the group's visuals. He is kind, mischievous, and eccentric. No one knows what he'll do next. Everyone speaks to him comfortably in casual speech. People call him Ster.

Name: Lee Pingu. Male. A member of the Quack Quack Expedition. He has a mischievous personality. However, he is more predictable than Chester, so the others can sometimes handle his antics. He is in a virtual marriage with Tako. Everyone speaks to him comfortably in casual speech.