The NCT boys have unearthed some adorable pre-debut performance clips from their 'S.M.ROOKIES Show'!

Before the members of NCT debuted as the charismatic idols they are today, they were young trainees with S.M.ROOKIES. You can check out members of NCT 127 and NCT Dream performing "Under The Sea" together above, as well as NCT 127 members performing "Who Are You" and "All Night" below!

Stay tuned for more adorable memories through the 'NCT.zip' series!