Triangle – Season 1
Heo Young Dal is in deep debt, and finds that the only way to get out of his own messes is to be Jang Dong Soo's informant.
Kim Jae-joong
Heo Young-dal / Jang Dong-chul
Yim Si-wan
Yoon Yang-ha / Jang Dong-woo
Lee Beom-soo
Jang Dong-soo
Oh Yeon-soo
Hwang Shin-hye
Baek Jin-hee
Oh Jung-hee
Park Ji-yeon
Sung Yoo-jin
Kim Byeong-ok
Ko Bok-tae
Kim Hye-eun
Kim Ok-kyung
Moon Jung-hyun
Min Su
Hong Seok-cheon
Man-kang
Kim Ji-young
Oh Jung-hee's grandmother
Park Hyo-joo
Kang Jin
Jung Ji-yoon
Kang Hyun-mi
Noh Young-hak
Jang Dong-soo (young)
Kim So-hyun
Hwang Shin-hye (young)
05 Apr 2014
13 Feb 2022
19 Oct 2022
13 Nov 2018
24 Sept 2006
18 Jun 2019
19 Jul 2017
10 May 2017
02 Mar 2010
22 Aug 2010
09 Jun 2010
23 Nov 2024
16 Oct 2021
23 Sept 2003
04 Sept 2019
24 Dec 2025
23 Oct 2019
30 May 2012
05 Jan 2005
19 Sept 2024