Boys II Planet is a South Korean reality competition series, where trainees from around the world, primarily South Korea, Great China, Japan, Thailand, the United States, and various other countries, competed to debut in an eight-member boy group. The 160 contestants were initially divided into two planets: Planet K featuring Korean contestants, and Planet C primarily featuring contestants from Greater China, with each consisting of 80 individuals. The two merged after the first two episodes of each series. They then battled for the opportunity to debut in the final group, Alpha Drive One.
Contestants The English names of contestants are presented in Eastern order in accordance with the official website.
The ages of all contestants are presented in accordance with the international age system as of Episode 1 of the K program (July 17, 2025).
Color key Final members of Alpha Drive One Contestant was eliminated in the final episode Contestant was eliminated at the Third Survival Announcement Contestant was eliminated at the Second Survival Announcement Contestant was eliminated at the First Survival Announcement Contestant was eliminated in the Signal Song Test Contestant was eliminated in the Class Placement Match Contestant left the show Top 8