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I.O.I Unit Countdown poster
TV Trailers
TV Trailers

I.O.I Unit Countdown Cast & Crew

Returning Series 2016
Starring Cast
I
Im Na-young
Self
K
Kim So-hye
Self
K
Kim Do-yeon
Self
Z
Zhou Jieqiong
Self
C
Choi Yoo-jung
Self
C
Chung Ha
Self

Full cast

7 cast members
Im Na-young
Self
Kim So-hye
Self
Kim Do-yeon
Self
Zhou Jieqiong
Self
Choi Yoo-jung
Self
Chung Ha
Self
Jeon Somi
Self