Seok-woo is a fictional character from the South Korean film Train to Busan. He is a fund manager who is initially portrayed as a workaholic, often neglecting his family, particularly his daughter, Soo-an. As the story unfolds, Seok-woo's character evolves, showcasing his protective instincts and determination to keep his daughter safe during a zombie outbreak. Throughout the film, Seok-woo faces numerous challenges and moral dilemmas, highlighting themes of sacrifice and redemption. His journey emphasizes the importance of family and human connection in the face of adversity, making him a relatable and compelling character in the narrative.