Full cast of Twelve

Don Lee

Tae-san

8 episodes

Park Hyung-sik

Ogwi

8 episodes

Seo In-guk

Won-seung

8 episodes

Lee Ju-bin

Mir

8 episodes

Ko Kyu-pil

Do-ni

8 episodes

Kang Mi-na

Kang-ji

8 episodes

Sung Yoo-bin

Jui-dol

8 episodes

Ahn Ji-hye

Mal-sook

8 episodes

Regina Lei

Bang-wool

8 episodes

Sung Dong-il

Ma-rok

8 episodes