Cho Yeo-jeong was born in Seoul, South Korea. She debuted as a CeCi Magazine cover girl at the age of 16 in 1997, and began actively acting in 1999. Despite appearing in drama series, music videos, and TV commercials afterwards, she remained obscure. During this period, she was also unhappy with the limited roles being offered to her.

Then Cho rose to the spotlight in 2010 by starring as the ambitious Joseon woman of lower class in the erotic period drama The Servant. The R-rated movie, which was a newly adapted and tragic version of Korea's famous folktale The Story of Chunhyang, had been turned down by a number of actresses because it contained too many sex scenes.

Song made his debut as a movie actor in The Day a Pig Fell into the Well in 1996, and came to national prominence with a series of critically acclaimed performances, including No. 3, Joint Security Area, Memories of Murder, The Host, and A Taxi Driver.

Song rose to international prominence for his performances in Snowpiercer (2013) and Parasite (2019), the latter of which won the Palme d'Or at the Cannes Film Festival and the Academy Award for Best Picture. He was awarded Best Actor at the 75th Cannes Film Festival for his performance in Broker. In 2020, The New York Times ranked him #6 on its list of the 25 Greatest Actors of the 21st Century. He has been named Gallup Korea's Film Actor of the Year four times (2013, 2017, 2019 and 2020).

In one such Best Theater project, he worked with TV director Lee Yoon-jung on Taereung National Village (2005), which led to him being cast in her later series Coffee Prince in 2007. Coffee Prince, along with medical drama White Tower brought Lee mainstream popularity, which he followed with Pasta (2010), Golden Time (2012) and My Mister (2018).

Meanwhile, on the big screen, he received a Best Actor award from the Las Palmas de Gran Canaria International Film Festival for his role in Paju (2009), followed by critical acclaim for mystery thriller Helpless (2012), romantic comedy All About My Wife (2012), and crime/black comedy A Hard Day (2014). Lee also continues to collaborate with auteur Hong Sang-soo, and his arthouse films with Hong include Night and Day (2008), Oki's Movie (2010), and Nobody's Daughter

Lee Jeung-eun started out as theater play assistant director. After graduating from the Department of Theater and Film at Hanyang University she debuted in the play A Midsummer Night's Dream in 1991.

In 2000, she made her big screen debut with minor role in the movie A Masterpiece In My Life. It was followed by another minor role, in 2001 film Wanee & Junah. Lee experienced camera fright and those cinematic acting experience traumatized her. Lee decided to go back onstage.

In 2000s, beside active in theater, Lee also made a living as acting teacher. Two of her pupils were Ye Ji-won and Lee Eun-joo.

Choi was born in Seoul, South Korea, the youngest of two sons. He immigrated to Canada with his family when he was in grade five, living in British Columbia, where he spent the next ten years of his life. He attended high school at Pinetree Secondary School in Coquitlam. His English name is Edward and he goes by the nickname Eddie.

In 2011, while in third year at Simon Fraser University, then-21-year-old Choi was given permission by his parents to attend an acting audition within Korea, subsequently leading to him making his acting debut. Whilst in Korea Choi enrolled at Chung-Ang University, where he majored in cultural studies.

She is best known internationally for her role as Kim Ki-jung in the 2019 critically acclaimed Korean comedy thriller film Parasite, which won the Palme d'Or at the 2019 Cannes Film Festival and the Academy Award for Best Picture.

When Park was in high school, she watched the musical Grease and developed an interest in acting. While in university, Park started her career by turning to independent films after being rejected in around seventeen auditions. Known as a prolific performer in independent cinema, Park starred in the Korean Academy of Film Arts feature Ingtoogi: Battle of the Internet Trolls and the indie Steel Cold Winter, the latter of which drew notice when it premiered at the Busan International Film Festival.