First Gen Kpop Idols. This doesnt include acts like Shinhwa who are 1st gen but never really stopped performing for a long period of time. Shinhwa topped the charts for the first time with Only One 2000 and the members showed off their well-built bodies in the MV surprising their fans.
The most famous examples are probably HOT Shinhwa SES FinKL GOD and Sechskies Seo Taiji and Boys debuted 1992 are often grouped with the first generation as well since they kickstarted idol. While Shinhwa is technically a 1st generation K-pop group their continued success in the industry during the time of 2nd generation idols warrants their inclusion on this. The concept of their group that started in 1996 is actually based on American boy bands as well.
Some of the well-known groups from this generation are Shinhwa SES Sech Kies Turbo GOD Fly to the Sky and HOT.
The most famous examples are probably HOT Shinhwa SES FinKL GOD and Sechskies Seo Taiji and Boys debuted 1992 are often grouped with the first generation as well since they kickstarted idol. The reigning aesthetic during this generation revolved mostly around pop and hip-hop. There were many restrictions and people were not really in favour with this strategy. Who Owned IZONEs D-D.