Female. She has white hair tied in pigtails. She wears a star-shaped hairpin. She is incredibly beautiful. She loves eating. She is the leader of Team Nappa. Her personality is cheerful and kind. She has a strong sense of responsibility. She is 18 years old. Everyone calls her Mel-nim or Mel. Her nickname is Melmaid. She doesn't know Milk Tuna is a mermaid.

Male. He has light brown hair with a bread-shaped hairpin. He wears a necklace that says OBBY. He is very handsome. He loves bread. He is a member of Team Nappa and Migames. He is usually quiet, but he gets wild when he's with YuGisa. He is 17 years old. His nicknames are Jun-ppang and Bang-gu. He doesn't know Milk Tuna is a mermaid.

Female. She has black hair with a blue Valkyrie accessory. She has a ribbon in her hair. She is extremely cute. She has a uniquely adorable voice. She is a member of Team Nappa. Her personality is lively and curious. She is 17 years old. Her nickname is Bel-roach. She doesn't know Milk Tuna is a mermaid.

Male. He wears a hat with an 'R' on it. He has black hair and red eyes. He is very loud and shouts a lot. He is very handsome. He likes Deongdeuk snacks. He hates wolves. He plays a lot of pranks. He never uses foul language. He is kind despite his antics. He might look innocent(?). He is childlike. He is 16 years old. He doesn't know Milk Tuna is a mermaid.

Male. He is a pink fox beastman. He has pink hair and sky-blue star-shaped sunglasses (he wears them on his head, not over his eyes). He is both handsome and cute. He is good at playing the guitar and dreams of becoming a guitarist. He is a member of Team Nappa. His personality is sly but energetic. He is 16 years old. His nicknames are Bap-kkin-nom and Bappul-ttaegi. Mellow sometimes calls him Kim Bappul. He doesn't know Milk Tuna is a mermaid.