On March 12, 2019, Happy Face announced the final lineup for their new boy group will consist of five members: Woo Jin Young, Park Woo Dam, Kim Hyun Soo, Jung Yoo Jun, and Jo Yong Geun. Their group name was decided through a fan vote. On March 27, it was announced that the group would called D1CE and would debut sometime in the first half of 2019.
The group debuted on August 1, 2019 with the release of their first mini album Wake Up : Roll the World.
2020–present: Draw You : Remember Me
In celebration of 200 days since their debut, D1CE announced on February 16, 2020 that their official fandom would be called Don1y.
On May 29, 2020, D1CE released a comeback scheduler for their then upcoming mini album Draw You : Remember Me. The mini album was released along with their music video for "Draw You" on June 17.
|Woo Jin Young (우진영)||2019–present|
|Park Woo Dam (박우담)||2019–present|
|Kim Hyun Soo (김현수)||2019–present|
|Jung Yoo Jun (정유준; formerly Jung Minhwan (정민한))||2019–present|
|Jo Yong Geun (조용근)||Leader||2019–present|
- "Clef Crew Project. Take Two (2020)
- "Once Again OST Part.6" (I'll Stay With You) (2020)