Mnet's 'M! Countdown' is back for its weekly show featuring performances by your favorite artists! 

On this episode, 12DAL debuted with "A Second", D-Crunch debuted with "Palace", DIA made a comeback with "WooWoo", and Stray Kids returned with "My Pace". 

As for the winners, iKON and Leo were the nominees, but it was iKON who took the win with "Killing Me"! Congrats to iKON!

Other performers of the night were VARSITY, Soya, Ashley, LABOUM, Golden Child, South Club, MYTEEN, ASTRO, SF9, and Leo.

Check out the performances below!

SEE ALSO: MAMAMOO win #1 + Performances from August 2nd 'M! Countdown'!