Slipknot is a nine-piece alternative/nu metal band from Des Moines, Iowa (United States). Aside from their real names, members of the band are also referred to by numbers 0 through 8.(#0 Sid Wilson, #1 Joey Jordison, #2 Paul Gray, #3 Chris Fehn, #4 James Root, #5 Craig Jones, #6 Shawn Crahan, #7 Mick Thomson & #8 Corey Taylor)

Slipknot is known for its strange and often frightening image; the members wear matching uniform jumpsuits all of which have the UPC barcode 742617000027 printed on them (The barcode from their first album Mate, Feed , Kill, Repeat) and each has a unique mask which they are never seen without (on any official Slipknot material) until the interviews on their latest DVD - Voliminal: Inside the Nine, and partially on the music video for the song, Before I Forget. Each member has made a distinct change to their masks after each studio album. Several members have several masks that are interchanged during any one time period, most notably Chris (#3) and Sid (#0).

The band released many different DVDs, the first official one titled 'Disasterpieces' (named after the song Disasterpiece off 'Iowa') filmed at the London Arena on February 16th 2002 by over 32 cameras, including cameras fitted on each of the masks worn by the band. During this show Sid (#0) went into the crowd for the song Spit it Out and someone managed to get the camera from his mask, it was returned after the show. After the success of Disasterpieces going triple platinum Slipknot officially released an old "home video" after that titled,'Welcome to our Neighborhood' It was a short DVD including interviews, live performances of Surfacing, and Wait and Bleed, and it included the music videos for Spit It Out, and Scissors. Their latest DVD, titled, Voliminal: Inside the 9, contains a unique look at the band and their life. It also contains music videos, live performances and interviews with the band members (in which they appear unmasked).