Main •
Lee Sun-kyun as Eun Yong, a money trader who is the owner and head of investment of a global private equity fund. •
Moon Chae-won as Park Joon-kyung, a former prosecutor and a military judicial officer who passed the bar exam and graduated from the training institute with top scores. • Han Dong-hee as young Park Joon-kyung •
Kang You-seok as Jang Tae-chun, Yong's nephew who is a prosecutor. •
Park Hoon as Hwang Ki-seok, a chief prosecutor.
Supporting • Kim Hong-pa as Myung In-joo, godfather of the underground economy who built a cartel of greed. • Kim Hye-hwa as Hong Han-na, Yong's partner who is a lobbyist-turned-private equity fund representative. •
Lee Ki-young as Oh Chang-hyun, former chief of the Seoul District Prosecutors' Office. •
Choi Min-chul as Park Jung-soo, the chief prosecutor of the 5th Detective Division. • Park Jung-pyo as Lee Young-jin, Ki-seok's right-hand man and chief prosecutor of the Seoul Central District Prosecutors' Office. • Kwon Hyuk as Lee Su-dong, In-joo's partner. • Won Hyun-joon as Lee Jin-ho, a capital market thug and Yong's old friend from juvenile detention center. • Kim Kyung-ho as young Lee Jin-ho • Lee Geon-myung as Kim Seong-tae, In-joo's right-hand man. • Kwon Tae-won as Baek In-soo, a former prosecutor and a member of the National Assembly. • Jo Young-jin as Son Seung-jin, a politician.
Extended • Kim Jae-rok as President Park •
Seo Ji-hoon as Cha Dong-jin
Special appearance • Lee Jung-bin as Kim Ju-hyeon ==Production==