Standby I.O.I (2016) featured a cast of 12 tracked actors. Of these, 12 (100%) are still alive today. The oldest surviving cast member is You Hee-yeol, age 55. This TV series starred Choi Yoo-jung and Yeonjung.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast12 members
| Person | Character | Status | DOB | Age | DOD | Age in 2016 |
|---|---|---|---|---|---|---|
 Choi Yoo-jung Self | Self | Living | 12/11/1999 | 26 | — | 17 |
 Yeonjung Self | Self | Living | 03/08/1999 | 27 | — | 17 |
 Kim Do-yeon Self | Self | Living | 04/12/1999 | 26 | — | 17 |
 Kim So-hye Self | Self | Living | 19/07/1999 | 27 | — | 17 |
 Lim Na-young Self | Self | Living | 18/12/1995 | 30 | — | 21 |
 Kim Se-jeong Self | Self | Living | 28/08/1996 | 30 | — | 20 |
 Jeon Somi Self | Self | Living | 09/03/2001 | 25 | — | 15 |
 Zhou Jieqiong Self | Self | Living | 16/12/1998 | 27 | — | 18 |
 Jung Chae-yeon Self | Self | Living | 01/12/1997 | 28 | — | 19 |
 Kang Mi-na Self | Self | Living | 04/12/1999 | 26 | — | 17 |
 Chungha Self | Self | Living | 09/02/1996 | 30 | — | 20 |
 You Hee-yeol Self | Self | Living | 19/04/1971 | 55 | — | 45 |