Their first line-up consisted of HanU, Rica, Hyeonsung, Cindy & Jiyoon, but in October 2015, Cindy withdrew from 10X10 and Yoonah was added as a new member. As of May 2016, all first generation members have left 10X10 and they came back with a new line-up, with Yoonah and two new members. The new formation was short lived and disbanded in June 2016.
Former member HanU is now in the group AiRi under the same label. Another former member, Rica, has also worked as a soloist and is currently a member of the girl group Mo.I.