I.O.I was the first girl group formed by the Produce 101 series, and they were together from May 4, 2016 until January 29, 2017. They paved the way for future temporary groups created by competition shows, including former Produce 101-formed groups Wanna One, IZ*ONE, and X1; they’re still iconic to this day! While some of the members have…
Facility fun
