NCT 127's Mark is next to tease for the unit's comeback next month!

What's 'Limitless' about Mark? Everything, from his unique hair styles he's sported in all of the NCT units, to his possibilities as a member of NCT U, NCT 127, NCT Dream, and more!

For NCT 127's 2nd mini album, the original 7 members will be joined by Doyoung and Johnny to form a 9-member unit. Judging by the performance snippets we've been given so far, NCT 127's comeback choreography looks dope!

'Limitless' is set for January 9!