Heartbeat Cast brings to life a unique blend of romance, fantasy, and drama. The series follows the story of a vampire-human hybrid navigating life, love, and personal struggles. The main cast includes Ok Taecyeon as the protagonist, a charming and conflicted vampire, alongside Kim So-eun, who portrays the female lead caught in a complex love triangle.
Table of Contents
Introduction

Heartbeat is a South Korean fantasy-romance drama that blends elements of the supernatural with a compelling love story. The series follows the life of Cheon Ki-joon, a vampire-human hybrid portrayed by Ok Taecyeon, who struggles with his identity and longings for a normal life. His world is turned upside down when he meets Jung So-yeon, played by Kim So-eun, a woman who becomes entangled in his complicated and supernatural existence. As their relationship evolves, the drama explores themes of love, identity, sacrifice, and the challenges of being caught between two worlds. With strong performances and a unique storyline, Heartbeat captivates viewers with its mix of romance, fantasy, and emotional depth.
Heartbeat Cast
Ok Taecyeon as Cheon Ki-joon
- Character Overview: Cheon Ki-joon is a vampire-human hybrid who struggles with his existence and longs for a more normal life. His unique situation, having both human and vampire traits, creates an internal conflict as he navigates the complexities of his identity. Ki-joon’s life takes a turn when he meets Jung So-yeon, sparking a complicated and passionate relationship.
- Actor Background: Ok Taecyeon is a well-known South Korean singer, actor, and member of the K-pop group 2PM. He has garnered a strong following due to his roles in dramas such as Vincenzo, Dream High, and Save Me. Taecyeon’s portrayal of Cheon Ki-joon highlights his emotional depth, making his character both compelling and relatable.
Kim So-eun as Jung So-yeon
- Character Overview: Jung So-yeon is the female lead who becomes entangled in Ki-joon’s supernatural world. Her kind-hearted and strong-willed personality makes her a grounding force for Ki-joon, even as she grapples with the challenges of loving someone with a dark secret. So-yeon’s emotional journey is central to the series, as she struggles with her growing feelings for Ki-joon and the dangerous world he inhabits.
- Actor Background: Kim So-eun is a talented actress known for her versatile roles in dramas such as Boys Over Flowers, The Man Who Can’t Get Married, and Liar Game. Her performance in Heartbeat showcases her ability to portray both vulnerability and strength, creating a dynamic character who becomes the emotional core of the story.
Park Kang-hyun as Lee Hoon
- Character Overview: Lee Hoon is a character who adds complexity to the love triangle at the heart of Heartbeat. He is a key figure in the story’s development, further complicating Ki-joon and So-yeon’s relationship. Lee Hoon is a character with his own struggles and motivations, and his presence adds tension and drama to the plot.
- Actor Background: Park Kang-hyun is known for his work in television dramas and films. His portrayal of Lee Hoon brings an extra layer of depth to the series, as his character is neither entirely good nor bad, creating an intriguing dynamic between the main characters.
Jang Hee-jin as Yoo Ri-na
- Character Overview: Yoo Ri-na plays a significant role in the narrative, adding to the interpersonal conflicts and tension that unfold between the main characters. Her presence introduces new challenges to Ki-joon and So-yeon’s relationship, as her motivations and actions become key factors in the unfolding drama.
- Actor Background: Jang Hee-jin is a versatile actress known for her roles in various dramas. Her portrayal of Yoo Ri-na adds intrigue and suspense to the storyline, making her an important character who shapes the series’ emotional beats.
Lee Joo-bin as Park Mi-ran
- Character Overview: Park Mi-ran plays a supporting yet crucial role in the drama, influencing the relationships around the lead characters. Her character brings additional drama and depth to the story, offering support or challenges to the main narrative.
- Actor Background: Lee Joo-bin has built a strong reputation for her roles in both television dramas and films. She adds another layer to Heartbeat, providing balance and variety to the cast with her nuanced performance.
Supporting Cast
Lee Joo-bin as Park Mi-ran
- Character Overview: Park Mi-ran is a significant supporting character who influences the dynamics between the main characters, especially in relation to the growing tension in Ki-joon and So-yeon’s relationship. Mi-ran’s actions add layers of complexity, helping to drive the storyline forward.
- Actor Background: Lee Joo-bin is known for her versatile performances in both television and film. She has previously appeared in dramas such as My ID is Gangnam Beauty and My Roommate is a Gumiho, showcasing her ability to portray both comedic and dramatic roles.
Choi Won-young as Jang Hyeok
- Character Overview: Jang Hyeok is a secondary character who adds complexity to the story. His involvement in the narrative brings additional obstacles and conflicts for the lead characters. His actions create tension, making him an important figure in the unfolding drama.
- Actor Background: Choi Won-young is an experienced South Korean actor with a long career in both television and film. Known for his roles in The K2, The Man Who Kills Trouble, and Time, Choi’s portrayal of Jang Hyeok adds gravitas to the supporting cast.
Kim Hyun as Jo Woo-jin
- Character Overview: Jo Woo-jin is another supporting character who plays a pivotal role in influencing the actions of the main characters. His interactions with Ki-joon and So-yeon add additional layers of emotional depth and tension to the story.
- Actor Background: Kim Hyun is a talented actor recognized for his roles in various K-dramas. He has appeared in dramas like The Heirs and My Lovely Girl, bringing strong supporting performances to his roles.
Seo Yu-jin as Han Soo-young
- Character Overview: Han Soo-young plays a supporting role that intersects with the lives of the main characters. She provides additional context to the storyline, creating further complications in Ki-joon and So-yeon’s relationship, and her involvement helps move the plot forward.
- Actor Background: Seo Yu-jin is known for her work in several K-dramas. She has appeared in Queen: Love and War and The Lies Within, where she showcased her acting range and ability to tackle both light-hearted and dramatic roles.
Jo Jae-yun as Jang Moon-ki
- Character Overview: Jang Moon-ki plays a secondary character whose actions provide key moments in the development of the story. His involvement in various situations with the lead characters contributes to the overall narrative of power struggles and emotional growth.
- Actor Background: Jo Jae-yun is an accomplished actor with notable experience in both films and television. His roles in dramas like Misty and Liver or Die have helped solidify his reputation for portraying complex and multifaceted characters.
Kang Bu-ja as Min Jung-hwa
- Character Overview: Min Jung-hwa is a supporting character who helps to further the emotional and relational dynamics within the series. Her role adds tension and development to the main storylines, creating significant moments between the characters.
- Actor Background: Kang Bu-ja is a seasoned actress with extensive experience in South Korean television. She has appeared in numerous dramas, contributing to various genres with her ability to bring depth and nuance to her characters.
Conclusion
Heartbeat captivates viewers with its unique blend of romance, fantasy, and drama, drawing on the intriguing dynamics between its compelling main and supporting cast. At the heart of the story is Cheon Ki-joon (played by Ok Taecyeon), a vampire-human hybrid struggling with his identity and the complexities of his supernatural existence. Alongside him is Jung So-yeon (portrayed by Kim So-eun), whose love and compassion bring warmth and grounding to his tumultuous life. Their relationship, filled with challenges, desire, and sacrifice, forms the emotional core of the drama.
The supporting cast adds further depth to the series, introducing obstacles, conflicts, and emotional stakes that enrich the story’s narrative. Their performances enhance the fantasy-romantic atmosphere, making Heartbeat a story of love, self-discovery, and the battle between the ordinary and the supernatural.
Weak Hero Class 1 Cast & Their Role (2022) Action Drama
(FAQs)
Who plays Cheon Ki-joon in Heartbeat?
Cheon Ki-joon, the main character, is portrayed by Ok Taecyeon, a South Korean singer and actor. He is best known for his work as a member of the K-pop group 2PM and his roles in dramas like Vincenzo and Save Me.
Who plays the female lead, Jung So-yeon?
Jung So-yeon, the female lead, is played by Kim So-eun, a well-known actress in South Korea. She has appeared in popular dramas like Boys Over Flowers and The Man Who Can’t Get Married, bringing depth to her role as the strong and compassionate female protagonist in Heartbeat.
What role does Park Kang-hyun play in Heartbeat?
Park Kang-hyun plays Lee Hoon, a supporting character who is involved in the complex relationships between the main characters. He adds to the love triangle and brings an emotional layer to the narrative.
Has Ok Taecyeon been in other notable dramas?
Yes, Ok Taecyeon is widely recognized for his roles in popular dramas such as Vincenzo, Dream High, and Save Me. His performance in Heartbeat showcases his versatility, transitioning from action-packed roles to a more emotionally charged, romantic one.
What other projects has Kim So-eun worked on?
Kim So-eun is a seasoned actress known for her roles in Boys Over Flowers, Liar Game, and The Man Who Can’t Get Married. She is celebrated for her ability to bring emotional depth and complexity to her characters.
Who plays Yoo Ri-na in Heartbeat?
Yoo Ri-na, a secondary character in the series, is portrayed by Jang Hee-jin. Her character adds drama and tension to the relationships between the main leads, creating more obstacles for the love story to unfold.
What is the significance of the supporting cast in Heartbeat?
The supporting cast plays a crucial role in Heartbeat, adding layers of complexity to the narrative. Characters like Lee Joo-bin (Park Mi-ran) and Choi Won-young (Jang Hyeok) contribute to the development of the central love story and the emotional struggles of the main characters.
Is Ok Taecyeon’s character, Cheon Ki-joon, a vampire?
Yes, Cheon Ki-joon is a vampire-human hybrid in Heartbeat. His supernatural nature plays a significant role in the drama, influencing his relationships and the internal struggles he faces throughout the series.
How does Kim So-eun portray Jung So-yeon?
Kim So-eun portrays Jung So-yeon as a strong yet compassionate woman who becomes entangled in Ki-joon’s supernatural world. She navigates her emotions while balancing the challenges of falling in love with someone who harbors dark secrets.
What can viewers expect from the cast’s performances in Heartbeat?
Viewers can expect powerful and emotionally charged performances from the cast. Ok Taecyeon and Kim So-eun have great chemistry, making their on-screen relationship believable and captivating. The supporting cast also adds significant depth to the series, creating a dynamic and engaging atmosphere that keeps audiences hooked.