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

On this week's episode, HyunA & Dawn debuted with "Ping Pong", DAY6's Young K made his solo debut with "Guard You", and ICHILLIN' debuted with "GOT'YA". Lee Hi returned with "Red Lipstick", Sungmin made a comeback with "Goodnight, Summer", Baek Ah Yeon came back with "0%", A.C.E made their comeback with "Changer", PURPLE K!SS returned with "Zombie", OMEGA X made a comeback with "What's Goin' On", Hong Ju Hyun returned with "Flower", and Lee Ki Chan returned with "One Room".

As for the winners, BTOB and Stray Kids were the nominees, but it was Stray KIds who took the win with "Thunderous". Congratulations to Stray Kids!

Other performers included 'Girls Planet 999', BTOB, Stray Kids, fromis_9, MCND, Lee Eun Sang, Kwon Eun Bi, VERIVERY, and Hwang Woo Lim. 

Watch the performances below!

WINNER:

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DEBUT: HyunA & Dawn

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DEBUT: Young K

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DEBUT: ICHILLIN'

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COMEBACK: Lee Hi

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COMEBACK: Sungmin

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COMEBACK: Baek Ah Yeon

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COMEBACK: A.C.E

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COMEBACK: PURPLE K!SS

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COMEBACK: OMEGA X

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COMEBACK: Hong Ju Hyun

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COMEBACK: Lee Ki Chan

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Girls Planet 999

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BTOB

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Stray Kids

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fromis_9

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MCND

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Lee Eun Sang

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Kwon Eun Bi

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VERIVERY

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Hwang Woo Lim

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