Bad Guys (Korean: 나쁜 녀석들; RR: Nappeun Nyeoseokdeul) is a 2014 South Korean television series starring Kim Sang-joong, Park Hae-jin, Ma Dong-seok, Jo Dong-hyuk and Kang Ye-won.

[1][2][3][4] Fueled by the loss of his daughter to a murderer, Detective Oh Gu-tak will use any means necessary to catch criminals, and his ambiguous moral line often results in him getting suspended for excessive force.

After his former superior request him back in the force to track down a serial killer who killed his son, a detective, Gu-tak comes up with a plan to form a team of "bad guys" to work on cases and hunt down the serial killer, ambitious police inspector Yoo Mi-young signs off on the arrangement.

Gu-tak releases three convicts from jail to form his team: Lee Jung-moon is the youngest member of Mensa with a genius IQ of 165 and doctorate degrees in math and philosophy, but behind his boyish facade is a psychopath serial killer; Park Woong-Cheol is a mob boss who crushed his way to the top of the gangster chain in 25 days, and still remains top dog in prison; and Jung Tae-soo was once a hired hit man who never made a single mistake, but suddenly confessed and turned himself in one day.

The drama is available to stream on Netflix with a variety of subtitles in North America, Malaysia, Thailand, Indonesia, the Philippines and Sri Lanka.