In the mid of 2007, JYPE announced that there would be a boy band of 11,12, or 13 member. In August, they announced names of 12 members. Nichkhun was on that list which is that same as in the reality show,He first appeared through MNET's Hot Blood, a program that showed the intense physical training that 13 male trainees had to go through for the opportunity to debut in either a 4-member ballad group 2AM or a 6-member dance group (originally had 7 members until the leader Jay Park left the group) 2PM under JYP Entertainment