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

On this week's episode, WHIB debuted with "Bang!", Catch the Young debuted with "Youth!!!", Heejin debuted with "Algorithm", and NiziU debuted with "Heartris". As for comebacks, Baek Ah Yeon, Taemin, Seventeen, Golden Child, Weeekly, Ghost9, OMEGA X, Youngjae, Billlie, VIVIZ, JUJU SECRET, KISS OF LIFE, ZEROBASEONE, and RIIZE made their return.

As for the winners, BTS' Jungkook and LE SSERAFIM were the nominees, but it was Jungkook who took the win with "Standing Next to You." Congratulations to Jungkook!

Other performances included CRAVITY and LIGHTSUM.

Watch the performances below!

WINNER:

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DEBUT: WHIB

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DEBUT: Catch the Young

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DEBUT: Heejin

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DEBUT: NiziU

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COMEBACK: Baek Ah Yeon

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COMEBACK: Taemin

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COMEBACK: Seventeen

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COMEBACK: Golden Child

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COMEBACK: Weeekly

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COMEBACK: Ghost9

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COMEBACK: OMEGA X

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COMEBACK: Youngjae

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COMEBACK: Billlie

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COMEBACK: VIVIZ

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COMEBACK: JUJU SECRET

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COMEBACK: KISS OF LIFE

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COMEBACK: ZEROBASEONE

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COMEBACK: RIIZE

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CRAVITY

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LIGHTSUM

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