Song Joong-ki
Yoon Hyun-woo / Jin Do-jun (16 eps)
Lee Sung-min
Jin Yang-chul (16 eps)
Shin Hyun-been
Seo Min-young (16 eps)
Yoon Je-moon
Jin Young-ki (16 eps)
Kim Shin-rock
Jin Hwa-young (16 eps)
Jo Han-chul
Jin Dong-ki (16 eps)
Park Ji-hyun
Mo Hyun-min (16 eps)
Jeong Hye-young
Lee Hae-in (16 eps)
Kim Young-jae
Jin Yoon-gi (16 eps)
Kim Jung-nan
Shon Jung-rae (16 eps)
Kim Hyun
Lee Pil-ok (16 eps)
Kim Do-hyun
Choi Chang-je (16 eps)
Seo Jae-hee
Yu Ji-na (16 eps)
Jung Hee-tae
Lee Hang-jae (15 eps)
Park Hyeok-kwon
Oh Se-hyun (14 eps)
Heo Jeong-do
Kim Joo-ryeon (9 eps)
Park Ji-hoon
Ha In-seok (9 eps)
Kang Ki-doong
Jin Hyung-jun (8 eps)
Lee Gyu-hoe
Yoon Jung-yeon (7 eps)
Seo Jeong-yeon
Han Gyeong-hee (5 eps)
Jo Hye-joo
Jin Ye-jun (5 eps)
Son Kang-gook
Song Gi-ho (4 eps)
Kang Gil-woo
Managing director Baek (4 eps)
Lee Byung-joon
Joo Young-il (3 eps)
Kim Young-sam
Self (archival footage) (3 eps)
Kim Dae-jung
Self (archival footage) (3 eps)
Oh Ji-hye
Lim Myung-sook (3 eps)
Jinyoung
Shin Gyeong-min (2 eps)
Cha Sun-woo
Yoon Hyun-min (2 eps)
Kim Kang-hoon
Jin Do-joon (young) (2 eps)
Lee Hwang-eui
Mo Young-bae (2 eps)
Moon Seong-hyun
Jin Seong-jun (young) (2 eps)
Cha Sung-je
Jin Hyung-jun (young) (2 eps)
Kim Jeong-woo
Woo Byung-jun (2 eps)
Amy Aleha
Banker (1 eps)
Roh Tae-woo
Self (archival footage) (1 eps)
Seo Tai-ji
Self (archival footage) (1 eps)
Park Ji-sung
Self (archival footage) (1 eps)
Ahn Jung-hwan
Self (archival footage) (1 eps)
Roh Moo-hyun
Self (archival footage) (1 eps)
Lee Ja Young
Assemblywoman Song Jin Sook (1 eps)