Justin Cheung
張建聲
Cheung in July 2019
Born	Cheung Kin Sing (1983-03-11) 11 March 1983 (age 41) Hong Kong
Occupation	Actor
Years active	2010–present

Justin Cheung Kin Sing (Chinese: 張建聲; born 11 March 1983) is a Hong Kong actor. Starting his career in HMV-produced erotic films, Cheung gained recognition with his lead role as Frankie in the erotic black comedy film Due West: Our Sex Journey (2012). He then transitioned to different genres, starring in the crime film Imprisoned (2015) and the drama film The Menu (2016). Cheung achieved breakout success with the role Jiu Jik in the crime thriller series OCTB (2017). He continued to star in various productions, taking on lead roles in crime films Deception of the Novelist (2019) and the Breakout Brothers trilogy (2021–2022), as well as supporting lead roles in ViuTV action thriller series Warriors Within (2020) and action film Dynasty Warriors (2021). He is set to reprise as Jiu Jik in the upcoming OCTB 2.

Cheung was born on 11 March 1983, in Hong Kong.^[1] Cheung's father works as a cross-border truck driver, and he grew up in a public housing estate.^[2] He attended S.K.H. Leung Kwai Yee Secondary School [zh],^[3] but he did not perform well academically, and he described himself as deviant during his youth.^[4] At the age of 16, he started working as a janitor at a hotel in Central prior to graduation and only scored one mark in the Hong Kong Certificate of Education Examination.^[4][5] After completing secondary school, he worked in various roles such as a clerk, delivery man, salesman, and construction worker.^[4][5] When he turned 18, he developed an interest in artistic cycling and began filming his moves, which sparked his fascination with filmmaking.^[4] At the age of 25, Cheung went on a nine-month working holiday to Perth, Australia. During his time there, he worked on a farm, in a steel mill, and at a Chinese restaurant.^[4][5] He also entered into a relationship with a Chinese girlfriend and nearly got married, but ultimately ran away from the wedding and returned to Hong Kong.^[4]

Upon his return to Hong Kong, he did not find any job until his newfound girlfriend encouraged him to pursue a career in modeling.^[4] After two years as a model, Cheung aspired to become an actor and signed with Stephen Shiu Jr [zh].'s artist agency, HMV Digital China [zh].^[2] In the first year, he didn't receive any job offers except for one as a podcast host.^[2] However, he began receiving roles in erotic films in the following year.^[5][6] Cheung's breakout role came in 2012 when he landed the leading role of Frankie in the erotic film Due West: Our Sex Journey, which was adapted from the web novel Dongguan Wood [zh].^[4][7] During the filming of Due West, director Mark Wu [zh] recommended that he try method acting, which became his acting style and ignited his passion for the craft.^[7] However, his fame also led to him being labeled as an erotic star, which resulted in him being rejected for several film roles due to the stereotype.^[4][8] As a result, he decided to switch genres and starred in another leading role in the 2013 romance film The Best Plan Is No Plan, alongside Sammy Sum and Hanjin Tan.^[9] In 2015, Cheung starred as Jack, the main villain and co-leading role, in the crime film Imprisoned: Survival Guide for Rich and Prodigal alongside Gregory Wong.^[10] He gained sixty pounds for the role,^[7] and took acting courses at a community centre to improve his skills.^[2] He also had a minor role in the comedy film Love Detective [zh] in the same year and landed another leading role as Chong Nga Yuen, a media tycoon, in the drama film The Menu the following year.^[11][12]

Cheung achieved breakthrough success with his portrayal of Jiu Jik, a maniac gangster, in the crime thriller web series OCTB [zh].^[13] He immersed himself in the character through method acting, dying his hair and eyebrows white, and spending two months with real gangsters.^[14][13] He also drew inspiration from Heath Ledger's portrayal of Joker, considering his performance a tribute to the character.^[14] The show's popularity and Cheung's multi-layered and convincing performance earned him widespread acclaim,^[13][15][16] and he won Most Popular Character in a Web Series in the Yahoo! Asia Buzz Awards 2017 [zh].^[17] Ming Pao described his performance as "resounding" and lauded his acting skills,^[18] while Yahoo! News recognized his character as "the most eye-catching among characters of all kind in the series".^[16] Oriental Daily News reported that Jiu Jik had attracted numerous fans, with some even getting tattoos of his portrait.^[19] Following this breakthrough, Cheung began receiving more roles in various productions,^[20] including a lead role in the 2017 horror film Ghost Net [zh],^[21] and supporting roles in the 2018 crime film Project Gutenberg, the 2018 business-themed mystery series The Trading Floor, and the 2019 crime film P Storm.^[22][23][24]

In 2019, Cheung made his producer debut and starred as Chui Chit, the male protagonist, in the mystery film Deception of the Novelist [zh].^[25] The following year, he took on lead roles as Lau Ka Wah and Tanaka Kunizen in the ViuTV drama series Sorina Fok [zh] and the action series Warriors Within [zh].^[26][27] He also played the lead role of Scar in the Breakout Brother trilogy from 2021 to 2022,^[28] and had supporting roles as Sung Ngo Yeung in the sports film One Second Champion, Zhang Fei in the action film Dynasty Warriors, and Tsang Chi Wai in the crime film The Attorney [zh].^[29][30][31] Cheung established a toy brand called NiL and in 2022, he launched an NFT featuring a cartoon version of Jiu Jik.^[32] In 2023, Cheung appeared in lead roles in the horror film Shadows [zh] and the crime film Death Notice.^[33][34] He is set to reprise his role as Jiu Jik in the currently in-production sequel OCTB 2.^[20] Cheung dedicated about a year to undergo method acting and reconnect with Jiu Jik's personality and mindset before the start of filming in 2023.^[20]

Cheung dated actress Kelly Chen [zh] for three years, before the broke up in July 2019.^[35] Cheung announced his relationship with actress Angel Zeng on 25 December 2023.^[36][37] They had been dating for a year and a half after meeting each other during the filming of the 2021 film P.T.G.F., in which Cheung played the role of Zeng's father.^[36]

• Justin Cheung at IMDb