GreatGuys.

RE:GUYS, formerly known as GreatGuys (멋진녀석들/ グレイトガイズ), is best described as a South Korean boy group, featuring 7 members: Yeongki, Jinhyeon, Donghyun, D.I, Daeyoung, Minki, and Semin. The act was first presented in 2017 with 9 members, Jaei, Yeongki, Jinhyeon, Junghoon, Donghyun, D.I, Daeyoung, Minki, and Semin, who began activities on August 25, 2017, under DNA Entertainment, with their 1st digital single “Last Men”. Additional background says that After several member departures the group was down to 3 members, Yeongki, Donghyun, and Semin. On April 1, 2025, it was revealed that the members' contracts with DNA Entertainment had ended, though the group had not officially disbanded. Throughout 2025, current and former members continued to hold events using the name GreatGuys, until they officially regrouped and rebranded as RE:GUYS on December 8, 2025.