Monsta X (Korean: 몬스타엑스; stylized as MONSTA X) is a South Korean boy group formed through the reality survival program No.Mercy under Starship Entertainment. The group is currently composed of six members: Shownu, Minhyuk, Kihyun, Hyungwon, Joohoney and I.M, with former member Wonho having left the group in October 2019.

The group debuted with their first EP Trespass on May 14, 2015. In March 2017, Monsta X released their first studio album and the final part of The Clan series The Clan Pt. 2.5: The Final Chapter. Since 2018, the group had four Japanese singles certified gold by the Recording Industry Association of Japan, then since 2019, nine of their Korean albums and extended plays had been certified platinum by the Korea Music Content Association. In 2020, the group's first English album All About Luv, ranked number five on the US Billboard 200 and number seven on the US Rolling Stone Top 200.

Since debut, they had been known for their aggressive style, combining elements of hip hop, EDM and pop. This aggressive style with "tracks centred around loud, clattering, electronic instrumentals, vicious rap verses, and striking vocals" had also been influential across the fourth generation of K-pop, along with breaking gender norms before it was a trend. Additionally, they also obtained the modifier of "Next Generation Beast Idol".