Yu Oh-seong

Cho Sang-tae Yoo Hee-je as young Sang-tae

Baek Mo-sa

Master Sergeant Tak In-hwan, leader of the Special Forces and the commander of the Guard Corps, also known as "Crow Platoon".

Seo Geom, Seo Hwi's father

Seo Jong-gil

Choi Hyeon-joon (father)

Gil So-gae Park Gun-woo as young So-gae

Choi Won-shin

Ki-chul

Shingwi Gan / Tae-gang

Policeman (cameo)