Kang Da-wit, a former judge turned public interest lawyer, had it all: fame, a perfect image, and a huge following on social media. But his life, driven by ambition and materialism, took an unexpected turn, forcing him to start over in a humble role.
Oh Gyu-jang's daughter. Her ambition is to transform O&Partners into a world-class law firm by prioritizing the law firm's growth and her own goals over justice and truth.
Shin Hye-ji [ko] as Baek Han-byeol, the granddaughter of Baek Joong-seop, who runs a dog café.[7]
Lee Moon-sik as Shin Jung-suk, Chief Justice (Ep. 1, 4, 9–12)[8]
Kim Jung-young as Kim Sung-rye, Kang Da-wit's mother whose hand was severed due to excessive overtime in Yoo Jae-bum's father's factory and then passed away suddenly when Da-wit was a high school student (Ep. 1, 2, 5, 9)[9]
Yun Je-wook as Yoo Jae-bum, a conman who pretended to be Kang Da-wit's elementary school classmate in order to take revenge against Da-wit by framing him for receiving a bribe (Ep. 1, 8–10)[9]
Lee Kang-wook as Kim Do-hoon / Goo Ji-hwan, a journalist who is friends with Kang Da-wit and a lawyer who earns money by taking on cases through illegal means (Ep. 1, 2, 4, 6–9)[10]
Sung Dong-il as Choi Ho-jip, Chief Judge who is notorious for his prickly nature in the legal community (Ep. 2)[11]
Lee Chun-moo as Kim Kang-hoon, a 12-year-old child on wheelchair due toparaplegia and wants to sue God for damages (Ep. 3, 4)[13]
Jung Sae-byul as Jung So-min, Kang-hoon's mother who is pushed to the limits of life while raising her disabled son alone (Ep. 3, 4)[14]
Yoo Jae-myung as Choi Woong-san, Woongsan Group and hospital's chairman who advocates anti-abortion hospital policy due to his religious beliefs (Ep. 4)[15]
Choi Hee-jin as Kim Jin-oh, a visually impaired judge (Ep. 3)[16]
Jung Hoe-ryn as Kaya, an immigrant from Myanmar who wants a divorce due to her father-in-law's sexual assault (Ep. 5, 6)[18]
Sung Yu-jin as Goo Ji-won, the judge who grants Kaya's divorce case and allows her to maintain her residency status (Ep. 5, 6)[19]
Lee Jong-won as Jo Kang-ryul, Chief Judge who believes in South Korea being a country of freedom and justice (Ep. 6)[20]
Jung Ji-so as Elijah, popular singer/idol who has been continuously harassed by cyber-bullying activist Ma Young-sook and by some fans obsessed with her (Ep. 7, 8)[21]
Oh Min-ae as Cha Jin-hee, Elijah's domineering and manipulative mother who is the CEO of her agency 'EK Entertainment' (Ep. 7, 8)[22]
Jang Duk-soo as Kang Min-ha, employee at a luxury brand store taking the stand as a key witness against Cha Jin-hee (Ep. 8)[23]
Kim Yong-joon as Yoon Baek-man, Yoo Jae-bum's father who owned a paper factory where Kang Da-wit's mother worked (Ep. 9, 10)[24]
Song Young-chang as Jang Hyun-bae, a powerful conglomerate chairman who was sentenced to a heavy prison term by Kang Da-wit for habitual assaults on employees and a forced sexual assault on a domestic helper (Ep. 1, 11–12)[25]
On February 19, 2025, it was reported thatJung Kyung-ho would star in the series.[26] On March 26,Lee Yoo-young was reported to be cast as the lead.[27] Jung Kyung-ho andSo Joo-yeon were officially confirmed to star on April 28.[28] On April 30,Choi Dae-hoon was set to make a special appearance.[29] On October 30,Yoon Na-moo,Seo Hye-won, andKang Hyung-seok were officially revealed to have joined the cast as part of the pro bono team alongside Jung and So.[2][30]
The OST singer lineup, which includesK.Will, Gyeong-gye,John Park, Namjong, andYangpa, was unveiled by Curiosity Studio on December 1, 2025. The music director of the series is Park Sung-il.[31]
On November 1, 2025, a teaser video was released, and the series was confirmed to premiere ontvN on December 6, airing every Saturday and Sunday at 21:10 (KST).[32] It also streams onNetflix.[33]
In the table above, theblue numbers represent the lowest ratings and thered numbers represent the highest ratings.
This series aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS,SBS,MBC, andEBS).
^Lee, Su-jin (December 6, 2025).박윤호, 차세대 라이징 행보 이어간다... '프로보노' 정경호 아역 [Park Yoon-ho continues his rise as a rising star... Child actor of Jung Kyung-ho in 'Pro Bono'].Ilgan Sports (in Korean). RetrievedDecember 8, 2025.
^Hwang, Yeon-do (December 2, 2025).배우 신혜지, 정경호 만난다... 법정 드라마 '프로보노' 출연 [Actress Shin Hye-ji and Jung Kyung-ho to star in legal drama "Pro Bono."].star1 (in Korean). RetrievedDecember 2, 2025 – viaNaver.
^Hwang, So-young (February 19, 2025).[단독] 정경호, '이태원 클라쓰' 감독 신작 '프로보노' 주인공 [[Exclusive] Jung Kyung-ho to Star in 'Pro Bono', Director of 'Itaewon Class'] (in Korean).JTBC. RetrievedNovember 1, 2025 – viaNaver.
^Jang, A-reum (March 26, 2025).[단독] 이유영, 로펌 대표된다...정경호와 '프로보노' 주연 [[Exclusive] Lee Yoo-young to Lead Law Firm, Starring Jung Kyung-ho in "Pro Bono"] (in Korean). News 1. RetrievedNovember 1, 2025 – viaNaver.
^Kim, Soo-jin (April 28, 2025).정경호·소주연, 드라마 '프로보노' 출연 [공식] [Jung Kyung-ho and So Ju-yeon to Star in Drama "Pro Bono" [Official]] (in Korean). Star News. RetrievedNovember 1, 2025 – viaNaver.
^Jang, Jin-ri (April 30, 2025).[단독]'폭싹' 학씨 최대훈, '프로보노' 뜬다...'초특급 대세'의 특별출연 [[Exclusive] Choi Dae-hoon, the "Boomssak" student, is on the rise with his "Pro Bono" work... A special appearance by a "superstar."] (in Korean).SPOTV. RetrievedNovember 1, 2025 – viaNaver.
^Jeong, Min-kyung (February 19, 2025).서혜원, '악마판사' 작가 신작 '프로보노' 출연...정경호·소주연 만난다 [공식] [Seo Hye-won to star in "Pro Bono," a new drama from the writer of "The Devil Judge," alongside Jung Kyung-ho and So Joo-yeon [Official]] (in Korean). Xports News. RetrievedNovember 1, 2025 – viaNaver.
^Kim, Ji-hye (December 1, 2025).'프로보노' OST 라인업 공개... 케이윌·존박·양파 총출동 ['Pro Bono' OST lineup revealed... K. Will, John Park, and Yangpa all appear].Ilgan Sports (in Korean). RetrievedDecember 1, 2025.
^Park, Soo-in (November 1, 2025).정경호, 프리 허그? NO! 프리 변호(프로보노) [Jung Kyung-ho, free hugs? No! Free defense (Pro Bono)].Newsen (in Korean). RetrievedNovember 1, 2025.
_poster.png)
(in Korean)
