The #1 on M Countdown on 2018-02-08 was “Bad Boy” by Red Velvet — win No. 2 for the song and career win No. 33 for Red Velvet (No. 6 on this show). It also won Show Champion, Music Bank, Inkigayo the same week (4 crowns).
“Bad Boy” has 4 music show wins in total: 2018-02-07 Show Champion, 2018-02-08 M Countdown, 2018-02-09 Music Bank, 2018-02-11 Inkigayo. Red Velvet had 3 wins in 2018 up to this date, and this was win No. 6 on M Countdown. The previous week's M Countdown #1 was “Love Scenario” by iKon. The other shows that week went to The Show: “Bboom Bboom” by Momoland. Episode data comes from broadcasters' published results (Wikipedia lists, CC BY-SA) and is recounted daily.
| Date | Show | Song · Artist | |
|---|---|---|---|
| 2018-02-06 | The Show | Bboom BboomMomoland | ★ #1 |
| 2018-02-07 | Show Champion | Bad BoyRed Velvet | ★ #1 |
| 2018-02-08 | M Countdown | Bad BoyRed Velvet | ★ #1 |
| 2018-02-09 | Music Bank | Bad BoyRed Velvet | ★ #1 |
| 2018-02-11 | Inkigayo | Bad BoyRed Velvet | ★ #1 |