Lee Jung-jae is a South Korean actor, model, producer, director, and entrepreneur. He is well known for his acting performances in the South Korean films An Affair (1998), The Last Witness (2001), Typhoon (2005), The Thieves (2012), and The Face Reader (2013). In 2021, he earned huge popularity for playing Seong Gi-Hun in Netflixs survival drama Squid Game..As he did not grow up in a well-off family, and his brother is autistic, which increased his pressure of earning for the family. In an interview, he talked about his brother and said, I have a big brother, and hes not well. My parents had a hard time when our family wasnt so well off because he was born with autism. My parents had to work and because of that, I also felt responsible for taking care of him. I think thats why my father wanted me to get a better job. Since hes my brother, since Im his brother, I didnt think of him as a burden. As he couldnt get anything to eat himself, I had to eat with him, and I always had to go looking for him whenever he got lost outdoors. That was sort of inconvenient. A childhood picture of Lee Jung-jae.While Lee Jung-jae was working at a cafe in Apgujeong, the South Korean fashion designer Ha Yong-soo approached him and offered him to work as a model. Since then, he started working as a model.In 1993, after he made his debut in the SBS series Dinosaur Teacher (1993), he became well known, which helped him gain the lead and main roles in other Kdramas. Dinosaur Teacher (1993).Lee Jung-jae was then seen in the Kdramas Feelings (1993) and Love Is Blue (1995) before he was cast in Sandglass (1995) as Baek Jae-hee, the silent and devoted bodyguard of the lead character. His role was meant to be a supporting role with lesser screen time, but due to the growing popularity of his character, he became a national heartthrob. As a result, his screen time in the series was increased. Lee Jung-jae in a scene from Sandglass (1995).For three consecutive years, ie, 1993, 1994, and 1995, Jung Jae was the brand ambassador of the South Korean confectionery company Lotte Confectionery. Lee Jung-jae in an advertisement for a product of Lotte Confectionery.After playing a supporting character or second lead in the South Korean dramas Snail (1997) and White Nights 3.98 (1998), he only acted in South Korean films for a while.Jung-jae starred in the South Korean films Albatross (1996), Fire Bird (1997), and Father vs. Son (1997). In 1998, he was seen as Woo-in in the South Korean film An Affair directed by South Korean filmmaker E J-yong, which became his acting breakthrough. The film circles around the love affair of Seo-hyun (played South Korean actress Lee Mi-sook), a housewife and mother of a ten-year-old living a life of luxury, and Woo In, Seo-hyuns younger sisters fiance. The film earned several accolades and became the seventh-highest-grossing Korean film of 1998. Lee Jung-jae in a scene from An Affair (1998).Jung-jae then starred in lead roles in other successful South Korean films City of the Rising Sun (1999), Il Mare (2000), Last Present (2001), The Last Witness (2001), Over the Rainbow (2002), and Oh! Brothers (2003).In 2005, he played the lead role of Sejong in the South Korean film Typhoon, which was directed by Kwak Kyung-taek. The film chronicles the rivalry between Sejong (a South Korean intelligence officer) and Sin (a North Korean pirate and terrorist). In the film, Sejongs mission is to stop Sin from committing a terrorist attack against North Korea and South Korea. With a budget of over $ 15 million, the film was the highest budget action blockbuster of that time. Typhoon (2005).