W Cast and Characters

Cardiothoracic surgeon Oh Yeon-joo's (Han Hyo-joo) father mysteriously went missing while writing the last chapter of his webtoon "W". Yeon-joo goes to his office and is shocked to see a scene of the dying Kang Cheol (Lee Jong-suk), the main character of W, on her father's computer. While reading a note left behind by her father, a hand from the monitor pulled her in and she finds herself on the rooftop of a building next to a bleeding man. She manages to save him and realizes that the person she saved was Kang Cheol. Yeon-joo later discovers that she can only leave the webtoon based on Kang Cheol's change in feelings. When that happens, the words 'to be continued' will appear and she will teleport back to the real world.

Lee Jong-suk as Lee Woo-hyun
Lee Jong-suk as Kang Cheol
The lead character of the popular comic series "W". Calm, laid back and hardworking, Kang Cheol is JN Global's co-president, owner of broadcasting channel W and an Olympic Gold medalist in Shooting in the comic series. His family died from an unknown killer, yet Kang Cheol was immediately suspected to be the killer due to his Shooting background. After being proven innocent, Kang Cheol tries to find the murderer and seek revenge. He is later then stabbed on the rooftop of the hotel he is staying in by the killer. There, he meets the mysterious Oh Yeon-joo.

Han Hyo-joo as Oh Yeon-joo
A second year resident doctor in the Thoracic Surgery department of Myung Sei Hospital. She is the daughter of the comic artist who writes the famous webtoon series "W". When she receives the news of her father being absent for a number of days, she goes to his house to investigate. There, she is pulled into the webtoon.

Hyun Seung-min as teen Yeon-joo

Park Min-ha as child Yeon-joo

Jung Yoo-jin as Yoon So-hee
Kang Cheol's personal assistant and close friend. Her romantic feelings for Kang Cheol is hinted subtly throughout the series through her actions and behavior around him. She is loved by many fans of the comic series who adore the pairing of Kang Cheol and Yoon So-hee.

Lee Tae-hwan as Seo Do-Yoon
Kang Cheol's bodyguard and close friend. He is a martial arts instructor. He is loyal to Kang Cheol and in return, earned his trust.

Park Won-sang as Han Cheol-Ho
Inspector and a member of Congress who is also the presidential prospect of a new democratic party. He is the prosecutor of Kang Cheol, and looks for opportunities to imprison Kang Cheol and take him down. He joins hands with Han Sang woon, but later commits suicide through the drawings of Sung-moo.

Cha Kwang-soo as Son Hyun-seok
The director of a program specializing in criminal investigation and the general manager of the broadcasting channel W.

Kim Eui-sung as Oh Sung-moo
Yeon-joo's father and a famous artist who created the webtoon "W". A failed webtoon artist and divorcee, he gains popularity from "W". However, he starts to realize slowly that his webtoon has gained a life of its own and the characters and all the set-ups have come to life in a different dimension. Realizing this, he starts to notice that his drawings are resisted by the characters and change on their own sometimes. As a result, he decides to end Kang Cheol's life by drowning him in water, which is resisted by Kang Cheol in the webtoon. He meets Kang Cheol in the webtoon when Kang Cheol was stabbed.