The Legend of the Blue Sea Cast led by Jun Ji-hyun as Shim Cheong, a mermaid navigating the complexities of modern-day Seoul, and Lee Min-ho as Heo Joon-jae, a skilled con artist drawn into her world.
Table of Contents
Introduction

The Legend of the Blue Sea is a 2016 South Korean fantasy romance drama that captivated audiences with its enchanting blend of myth, romance, and modern-day intrigue. Inspired by the classic Korean legend of the fisherman and the mermaid, the series was written by Park Ji-eun and aired on SBS, starring the iconic Jun Ji-hyun and Lee Min-ho in the lead roles.
The story revolves around Shim Cheong, a beautiful and pure-hearted mermaid played by Jun Ji-hyun, who finds herself in the bustling city of Seoul after escaping from a mysterious organization that seeks to exploit her. There, she encounters Heo Joon-jae, portrayed by Lee Min-ho, a charismatic and skilled con artist who is instantly drawn to her. Their love story transcends time as it weaves between the modern world and the Joseon Dynasty, where their fates were intertwined centuries ago.
The Legend Of The Blue Sea Cast
- Role: A beautiful and pure-hearted mermaid who finds herself in the modern world after escaping from those who seek to exploit her.
- Notable for: Her graceful performance, capturing both the innocence and strength of a mermaid navigating the complexities of human life.
- Role: A skilled con artist with a mysterious past, drawn into Shim Cheong’s world after a series of unexpected encounters.
- Notable for: His charismatic screen presence, blending charm with a layered emotional depth.
- Role: Joon-jae’s loyal friend and mentor in the art of deception, known for his wit and sharp intellect.
- Notable for: His comedic timing and strong camaraderie with the lead characters.
- Role: A brilliant hacker and fellow con artist, whose quiet demeanor hides a complex personality.
- Notable for: His subtle yet impactful performance, adding depth to the series’ dynamic.
- Role: A university junior of Joon-jae, working as a researcher in conservation science, who secretly harbors feelings for him.
- Notable for: Her ability to portray vulnerability and emotional conflict with authenticity.
Moon So-ri as Ahn Jin-joo
- Role: Shi-ah’s sister-in-law, a madam in Daechi-dong, whose vanity and haughtiness contribute to the story’s intrigue.
- Notable for: Adding a layer of complexity with her bold and dynamic performance.
Shin Rin-ah as Seo Yoo-na
- Role: A young girl who can hear Shim Cheong’s inner thoughts, serving as a bridge between the mermaid and human worlds.
- Notable for: Her charming and heartfelt portrayal, adding warmth to the series.
Christina Sherman as Child Shim Cheong
- Role: The young version of Shim Cheong, reflecting the innocence and wonder of her character.
- Notable for: Her portrayal of the pure-hearted and curious nature of the mermaid.
Supporting Roles
Lee Ji-hoon as Heo Chi-hyun: Joon-jae’s stepbrother, whose unrequited love and complex relationship with his family add layers of tension to the storyline.
Hwang Shin-hye as Kang Seo-hee / Kang Ji-yeon: Chi-hyun’s mother and Joon-jae’s stepmother, whose secretive and manipulative actions drive much of the series’ conflict.
Oh Yeon-ah as Young Kang Seo-hee / Young Kang Ji-yeon / Hong Nan: Portrays the younger version of Kang Seo-hee, providing insights into her troubled past and motivations.
Sung Dong-il as Ma Dae-young / Yang Seung-gil: A corrupt nobleman in the Joseon era and a murderer in modern times, whose actions are central to the unfolding drama.
Lee Ho-jae as Professor Jin Kyung-won: A neuropsychiatrist and Joon-jae’s university professor, who aids in uncovering the characters’ past lives.
Shin Rin-ah as Seo Yoo-na: Shim Cheong’s young friend, who uniquely can hear her inner thoughts, bridging the gap between the mermaid and human worlds.
Park Hae-soo as Hong Dong-pyo: A modern-day detective investigating Dae-young’s crimes and Joon-jae’s scams, whose alliance with Joon-jae adds intrigue.
Lee Jae-won as Cha Dong-shik: Shi-ah’s brother and Jin-joo’s husband, whose role, though understated, contributes to the series’ complex web of relationships.
Moon So-ri as Ahn Jin-joo: Shi-ah’s sister-in-law, a Daechi-dong madam whose vanity and haughtiness add complexity to the plot.
Lee Ji-hoon as Heo Chi-hyun: Joon-jae’s stepbrother, whose feelings of inadequacy and unrequited love lead him down a dark path.
Conclusion
The Legend of the Blue Sea is a captivating blend of fantasy, romance, and adventure that has left a lasting impact on K-drama fans worldwide. The series masterfully weaves together the story of Shim Cheong, a mermaid navigating the modern world, and Heo Joon-jae, a charismatic con artist with a mysterious past.
The exceptional performances by the main cast—Jun Ji-hyun and Lee Min-ho—alongside a talented supporting ensemble, brought depth, emotion, and authenticity to the characters. From the thrilling plot twists to the heartwarming romance and breathtaking visuals, the drama captivated audiences with its unique blend of the supernatural and the everyday.
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FAQs
Who played the lead roles in The Legend of the Blue Sea?
Jun Ji-hyun played the role of Shim Cheong, the mermaid who finds herself in the modern world.
Lee Min-ho portrayed Heo Joon-jae, a charismatic con artist with a mysterious past.
Is The Legend of the Blue Sea based on a true story?
No, the drama is inspired by a classic Korean legend about a fisherman and a mermaid, with a modern twist.
What other dramas has Jun Ji-hyun starred in?
Jun Ji-hyun is known for her roles in My Love from the Star, Starz, and The Thieves, among others.
Has Lee Min-ho worked with Jun Ji-hyun before?
No, The Legend of the Blue Sea was their first on-screen collaboration, and their chemistry was widely praised.
Who played the character of Cha Shi-ah?
Shin Hye-sun portrayed Cha Shi-ah, Joon-jae’s university junior who has feelings for him.
What role did Lee Hee-joon play?
Lee Hee-joon played Jo Nam-doo, a skilled con artist and Joon-jae’s mentor.
Are there any famous guest appearances in the show?
Yes, the series features cameo appearances by several actors, including Kim Sung-oh and Choi Jung-woo.
What other dramas has Lee Min-ho been in?
Lee Min-ho is famous for Boys Over Flowers, The Heirs, and City Hunter, among others.
How did the cast prepare for their roles?
The cast underwent extensive rehearsals, with Jun Ji-hyun working on her underwater scenes and Lee Min-ho focusing on his con-artist persona.
Did the cast bond during filming?
Yes, the cast developed strong friendships, and behind-the-scenes footage often shows them laughing and sharing light moments.
Who played the young Shim Cheong?
Christina Sherman portrayed the child version of Shim Cheong, adding depth to the mermaid’s backstory.
Did any of the cast members win awards for their roles?
Yes, Jun Ji-hyun and Lee Min-ho received numerous awards for their performances in the drama.
Was there any real-life romance among the cast members?
No, the lead actors have not been romantically linked in real life, despite their on-screen chemistry.
What makes the cast of The Legend of the Blue Sea special?
The combination of talented actors, strong chemistry, and diverse character portrayals contributed to the drama’s success.
Is The Legend of the Blue Sea available for streaming?
Yes, the series is available on platforms like Netflix and Viki for international audiences.