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

On today's 'New Year's Special' episode, B.O.Y debuted with "My Angel", MCND debuted with "Top Gang", Momoland made a comeback with "Thumbs Up", TST came back with "Countdown", Eunki came back with "Mistake", Kim Jae Hwan returned with "The Time I Need", Newkidd made their comeback with "Come", Dongkiz said "All I Need is You", Golden Child came back with "Wannabe", Golden made a comeback with "Hate Everything", Stray Kids returned with "Levanter", Seven O'Clock returned with "Midnight Sun", and Geunsu came back with "Money".

There were no winners announced this episode, but BVNDIT, ONEWE, ONF, LABOUM, Jung Se Woon, Norazo, Dynamic Duo, and ATEEZ put on special performances.

Check out the performances below!

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DEBUT: B.O.Y

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DEBUT: MCND

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COMEBACK: Momoland

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COMEBACK: TST

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COMEBACK: Eunki

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COMEBACK: Kim Jae Hwan

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COMEBACK: Newkidd

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COMEBACK: Dongkiz

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COMEBACK: Golden Child

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COMEBACK: Golden

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COMEBACK: Stray Kids

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COMEBACK: Seven O'Clock

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COMEBACK: Geunsu

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BVNDIT

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ONEWE

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ONF

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LABOUM

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Jung Se Woon

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Norazo

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Dynamic Duo

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ATEEZ

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