Soo Ae as Soon-yi / Sunny

Jung Jin-young as Kim Jeong-man

Jung Kyung-ho as Young-deuk

Ju Jin-mo as Seong-chan

Shin Hyun-tak as Cheol-sik

Uhm Tae-woong as Sang-gil

Jo Mi-ryung as Jenny

Shin Jung-keun as Battalion Commander

Ji Il-ju as Jack of all trades soldier

Yang Young-Jo as Company Commander

Kim Byung-oh as Corporal in Sang-gil's Troop

Kim Tae-hyun as Solider 2 patrolling South Korean stronghold

Lee Young-suk as Soon-yi's Father

Choi Min-geum as Soon-yi's Mother

Kim Hee-chang as Sinister-looking Man

Lee Joo-sil as Mother-in-Law

Lee Jun-hyeok as Parting Soldier