Theater beginnings Oh Man-seok graduated from the School of Drama at
Korea National University of Arts with a
BFA in Acting. He made his stage debut in
Faust in 1999. One of his early notable roles was as the
androgynous court jester Gong-gil who becomes the object of obsession of the tyrant
King Yeonsan in
Yi, which would later be adapted into the hit 2005 film
King and the Clown. Highly acclaimed for his portrayal of Gong-gil, Oh was awarded Best New Actor by the National Theater Association of Korea for the play's first run in 2000, and he reprised the role four more times in 2001, 2003, 2006, and 2010. More roles followed in
The Rocky Horror Show (2001),
Return to the Forbidden Planet (2002),
Grease (2003), ''
Singin' in the Rain (2004), The Seagull (2004), Woyzeck (2004), and Assassins'' (2005).
Hedwig and the Angry Inch Oh became a bonafide
musical theatre superstar in 2005, when he was cast as the titular East German
transgender singer in the first Korean staging of the rock musical
Hedwig and the Angry Inch. As the first "Korean Hedwig," Oh received sensational reviews for his performance and he won Best Actor at the Korea Musical Awards. In succeeding years, the rock musical's popularity remained enduring in Korea, attracting other actors to the role in later runs, such as
Um Ki-joon,
Jo Jung-suk,
Song Chang-eui,
Yoon Do-hyun,
Kim Dong-wan and
Park Gun-hyung. When
John Cameron Mitchell, who wrote, directed and played the original Hedwig in the 1998 musical and the
2001 film, went to Korea in 2007 to hold a concert, Oh was one of his guest performers, along with other Korean
Hedwig actors. Oh was also able to talk to Mitchell one-on-one, without an interpreter, for one and a half hours. Both agreed that the role was emotionally and physically consuming, and Oh added that he used to sit absentmindedly with a cigarette for 20 minutes after finishing his performance. A year later in 2008, Mitchell returned to Korea, and he and Oh headlined a concert to commemorate
Hedwig's 10th anniversary. In 2012, seven years after the role made him famous, Oh reprised
Hedwig for the rock musical's seventh run in Korea. At a press conference, he jokingly talked about shaving his legs again and being banned from his favorite activities like eating meat, working out, and drinking alcohol, but said that the role was "certainly worth the ordeal." Oh said, "This musical tells us that to love someone is to accept him exactly the way he is. It also tells us that everyone deserves to be loved, and every individual is meaningful and important. I think that's the essential message of this piece."
From stage to screen Besides portraying
Hedwig, 2005 was also significant in Oh's career because of his appearance in the critically acclaimed period drama
Shin Don set in
Goryeo. He had played minor roles in film and TV before, but the Buddhist monk Wonhyeon was his first major supporting role. (Oh later made a
cameo in the 2010
Korean War drama
Road No. 1 as a favor to
Shin Don director
Kim Jin-min.) In 2006, Oh achieved mainstream fame with the television series
The Vineyard Man (also known as
The Man of the Vineyard), in his first onscreen leading role as a country guy in charge of a vineyard, who gradually falls for a hapless city girl determined to work there in order to inherit it. The romantic comedy initially had low ratings, but it later surprisingly held its own against ratings juggernaut
Jumong, unlike other
Korean dramas in the same timeslot. Oh won Best New Actor and the Popularity Award at the
2006 KBS Drama Awards, and he and costar
Yoon Eun-hye were voted as the Best Couple among the network's dramas. Later that year, Oh took on a very different role in
Hyena, a risque cable drama about the love lives of a group of four male friends. From 2009 to 2010, Oh starred in the daily drama
Jolly Widows, and he received another Best Actor award from the
KBS Drama Awards.
Theatre director He continued to be popular in musicals, appearing in the next several years in
Jang Yu-jeong's musical
Finding Kim Jong-wook (he later made a
cameo in its 2010 film adaptation
Finding Mr. Destiny,
A Day, and
Dreamgirls. Inspired by the 2007
Lee Joon-ik film, Oh made his debut as a
theatre director with
The Happy Life, which ran from 2008 to 2009. He was also the musical's lyricist and polished the script. The title is
ironic, since the story centers on two characters, a high school music teacher (played by
Yoo Jun-sang and Im Choon-gil) and a younger man who's recently been orphaned (played by
Ryan and
Kim Mu-yeol), who live dull, depressing lives, but the only thing that makes them feel alive and gives them joy is music. Calling it a musical that's "both cheerful and emotionally weighty," Oh said directing made him feel a huge sense of responsibility, fear, and nerves, but he did his best with the actors "to create something."" For his second directorial project, Oh chose
The Organ in My Heart. A stage adaptation of the 1999 film
The Harmonium in My Memory set in the 1960s about a 17-year-old sixth grader who develops a crush on a 21-year-old male teacher newly assigned to her village school, Oh had previously starred in the musical's original run in 2008. For the musical's run in 2011, Oh cast
Tim and Kim Seung-dae in the lead role. He then directed
The Toxic Avenger (called
Toxic Hero in Korean) in 2011. Oh had headlined the comedy musical in 2010, playing a nerd who is reborn as a giant green mutant with superpowers, who fights against corruption and environmental pollution. Oh was praised for successfully transforming into a grotesque, comical character, shedding the gentle image he frequently portrayed in previous musicals and television dramas. Afterwards, he starred in
True West (2010) and
200 Pounds Beauty (2011). The latter is a musical adaptation of the same-titled
2006 romantic comedy film, about an overweight
ghost singer who undergoes extensive
cosmetic surgery to become a pop star; Oh played her love interest, a music producer.
Back to television Oh played a professor in ''
What's Up'',
Song Ji-na's drama about college students in a musical theatre department, which aired on cable in 2011. He also held a series of mini-concerts in 16 cities in Japan that year. About his supporting turn as a talented but sidelined baseball player in
Wild Romance (2012), Oh said, "It's not easy to depict subtle changes in the character's mind. I wanted to portray how unsuccessful people in their 30s and 40s are living in this generation." Oh described appearing in the short drama format (such as
MBC's
Best Theater and
KBS's
Drama City) as a "meaningful experience" for him. He starred in the single-episode ''That Man's Jealous
(2006), Transformation
(2007), and Spy Trader Kim Chul-soo's Recent Condition
(2010), as well as the four-episode series Special Task Force MSS
(2011), and The True Colors of Gang and Cheol'' (2012).
2013-present He returned to theater in early 2013. Based on the
novel of the same name by
Daphne du Maurier and the
1940 film by
Alfred Hitchcock, the gothic musical
Rebecca takes place in
Manderley, a stately mansion owned by aristocratic widower Maxim DeWinter (played by Oh), whose memory of Rebecca, his beautiful dead wife who drowned in a boating accident, keeps haunting him and his new bride.
Jukebox musical Those Days (also known as
The Days) featured folk-rock singer
Kim Kwang-seok's music, in a story about the president's daughter who goes missing along with her bodyguard, on the day of the 20th anniversary of Korea-China diplomatic relations. Oh played the head of the presidential security service who slowly unravels the mystery of where they've gone. On television, Oh played the slacker husband of the second eldest daughter in weekend drama ''
Wang's Family''. He then starred as
drag queen Lola in the 2014 Korean staging of
Kinky Boots, the first international adaptation of the musical since its Broadway premiere in 2013. In 2018, he starred in the last few episodes of the
MBC drama
Partners for Justice as Do Ji-han, an experienced Prosecutor. He later reprised his role in the sequel
Partners for Justice 2, this time as a major character. In 2019, he played the character of Cho Cheol-gang in the tvN series
Crash Landing on You. ==Other activities==