1. They originally debuted with 12 members, and now have 8.

2. IU

3. There was originally supposed to be 17, but they debuted with 13.

4. SM Entertainment

5. Wonder Girls

6. Four members out of five

7. G-Dragon

8. Seo Taiji and the Boys

9. Sistar

10. PSY - Gangnam Style

11. BTS

12. Shinhwa

13. Lee Jun-ho, from 2PM

14. Shinee

15. Blackpink

16. EXO

17. Swing Entertainment

18. Reply 1988

19. SM, YG and JYP

20. 500 million Korean won