Kim Sung-oh

Yul

Choi Kang-jun, the new face of a drug gang whose eyes show madness.

Captain Cha Moo-hyuk, a former special agent from North Korea who was dispatched to handle the hostage crisis. He is based on Ángel Rubio, a deputy inspector with the Spanish National Police Corps who is Raquel's second-in-command, who he is portrayed by Fernando Soto.

Sound of evil spirits (voice)

Lee Son

Jo Hyung-woo Choi Dae-han as young Jo Hyung-woo

Lee Han-joo

Hwanghae-do's Gaejakdoo

Woo Bum-ryong

(Ep. 2)

The man at pub (ep. 3)

Hwang Wook, mayor of Sorang Town, bachelor

Sadam

Lee Chang-hee

An army instructor (ep 15)

Prosecutor Park Moon-soo (cameo, ep 20)

Shin Hyo-jung's fan (ep 1)

Joo Dae-sung

Kim Do-chul, Do-hyun's half-brother

Actor in action movie (cameo, ep 1)

Lee Ho-jin (cameo, ep 15-19)

Secretary Kim

Kim Dong-cheol

Steven

Seon Woo Hwan's friend (Ep.7)