The female lead and narrative center; a high-status woman whose life and political status become the focal point of intense romantic and political entanglements, anchoring a complicated reverse harem dynamic.
Seung-yi is the adult daughter raised by Doo-seok after being separated from Myeong-ja as a child. She becomes a confident Chinese interpreter at an international summit, yet still remembers her mother. Doo-seok takes her to China, where she reunites with the seriously ill Myeong-ja.
An immensely talented surgeon who brings complex surgical capabilities to the hospital ship after an unfortunate incident redirects her career. Struggling with family life, she initially lacks compassion for stubborn elderly patients. She is strict, emotionless, and dismissive of oriental medicine.
The owner of an unlicensed seafood restaurant who wants a relationship with Man-shik. She uses a red ribbon to signal whether she accepts his proposal and survives the tsunami.
Hyun Jung-hwa is a South Korean table tennis player preparing for the 41st World Championships while caring for her hospitalized father. Under intense pressure to win gold, she initially clashes with Li Bun-hui but eventually becomes her doubles partner and trusted teammate as the unified team faces political uncertainty.
Aspiring national aerobic athlete and the central love interest of the first film. After a toxic relationship and subsequent abortion, she receives crucial emotional and physical support from Eun-sik, culminating in her competing and reconciling with her feelings for him.
Assassin hired by Sakai to eliminate Qiu. Initially follows orders but spares Qiu due to a past act of kindness. After witnessing Dawn's death and realizing Sakai's betrayal, she defects, frees Mayumi, and helps Qiu and Yamura break through conditioning. She dies in Qiu's arms after being shot by Sakai.
Main character and oil rig worker. Her uncle secretly conspires to breed a long-burning life-form for fuel. After the creature escapes and kills several crew members, she survives and fights alongside the remaining workers to kill the beast using firearms and its weakness to flame.
Jin-ok is one of the three huntresses and a central figure in the search for the wanted man identified by a tattoo. She encounters a fugitive during a bounty gamble and escapes with him while Hong-dan and Ga-bi help her fight off pursuers. She later joins them in seeking the stauroscope as evidence for the royal mission.
Heo Ok-ran is a young woman admired for making excellent yams. Initially attached to Ha So-yong, she rejects Heo Sam-gwan before eventually marrying him after he persuades her family. Her troubled recollection of her first night with Ha So-yong confirms Heo Il-rak’s possible parentage and destabilizes the household.
Soe Hyeon-ji is a girl at Ji-in's school who remains close to him and is frequently around him, though he initially takes her presence for granted. Ji-in gradually realizes that he cares deeply for her. After his time-spanning connection with Yoon So-eun ends, he accepts Soe Hyeon-ji as his girlfriend.
A determined female boxer aiming to become an East Asian champion. She trains relentlessly, communicates primarily through her fighting skills, and frequently clashes with Pil-je, often landing ferocious punches on him. Eventually, she and the rest of the villagers warm up to him.
Ha Ji-won has 33 screen credits in a career dating back to 2000. Their work is anchored in the Sex is Zero Series universe with 2 titles. Signature works include Empress Ki, Pawn, Hospital Ship. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
Related entry on Wikidata (Q44260), public domain (CC0).
