Full cast of The Defects

Yum Jung-ah

Kim Se-hee

8 episodes

Won Jin-ah

Kim Ah-hyun

8 episodes

Choi Young-jun

Wu Tae-sik

8 episodes

Dex

Jeong-hyun

8 episodes

Ahn Ji-ho

Ju-ahn

8 episodes

Lee Na-eun

So-mi

8 episodes

Oh Seung-jun

Seok-su

8 episodes

Kang Ji-yong

Si-woo

8 episodes

Son Jong-hak

Kwon Kang-man

8 episodes

Song Young-gyu

Yoon Se-hoon

8 episodes

Kim Soo-ro

8 episodes

Shin Yeon-woo

Kim A Hyeon [Young]

8 episodes

Kim Ji Yoo

Kim Se-hee [Young]

8 episodes

Ban Hye-young

Client (eps 6)

1 episode