X1 (엑스원) is a group formed by the top 11 contestants from Produce X 101: Seungwoo, Seungyoun, Wooseok, Yohan, Hangyul, Junho, Dongpyo, Minhee, Eunsang, Hyeongjun and Dohyon. They were originally set to promote for 5 years under Swing Entertainment: the first half is meant for them to focus solely on the group and the second half they will be able to do work within their own companies such as debuting as a soloist or a member of a new group or returning to resume work with a former group. They made their official debut on August 27th, 2019 with the album Emergency: Quantum Leap. They disbanded on January 6, 2020.