MCs Jung Hyung Don and Defconn, who were incredibly confused by the NCT system, asked the boys what their NCT 2018 title track was. At first, the members stuttered, claiming that each unit had a title track, but Taeyong settled it by stating, "'Black on Black" which has all 18 members." 

The group then got in formation to perform the 18-member track "Black on Black" for the first time since their comeback showcase. You can check out the jaw-dropping performance above.

NCT also pulled off their first ever random play challenge on this week's 'Weekly Idol', dancing to various unit songs like "Boss", "Baby Don't Stop", "Chewing Gum", "Cherry Bomb", and more, which you can watch below. 

Who wants to see the 18-member NCT appear on more variety shows?