Aspiring artists have to go through a number of steps and processes before they can debut. This includes training, grooming, image building, makeovers, exercise, and more. Usually, before a group is officially debuted, the members are introduced in project groups, such as in the case of JYP Entertainment or they make cameos in other established artists' music videos.
If you look back at some of your favourite music videos, you'll be sure to spot at least one familiar face. Here are 5 K-Pop male idols who appeared in music videos before their debut!