GreatGuys (멋진녀석들) currently consists of 3 members: Horyeong, Donghwi and Baekgyeol. GreatGuys debuted on August 25, 2017 under DNA Entertainment with their first single "Last Men" as a 9 member group. On 24. August 2022 it got announced that leader Jae I left the group due to health issues. January 2nd, 2024 an announcement was made by DNA Entertainment confirming that, after their Japan Concert on 12. January to 29. January 2024, members Haneul, Daun, Dongin, Hwalchan and Uiyeon will not be renewing their contract with the agency, by its end at February 1st. GreatGuys is said to continue their activities after their Japan Concert as a three member group, consisting of remaining members Horyeong, Donghwi and Baekgyeol. On April 1st, 2025 they officially announced their disbandment, howerver on December 8th, 2025, they announced their rebranding as Re:Guys, which will consist of 7 of the original members.