Mick Thomson (born November 3, 1973) is an American metal musician. He is best known as being one of two guitarists in the Grammy-winning heavy metal band Slipknot. When performing with Slipknot, Thomson is known as "Number Seven", being that the band follows a numbering scheme for its members, ranging from 0-8. (Number 2 is still assigned to deceased bassist and co-founding member Paul Gray). His number is also tattooed on his left arm, as "seven", which can be seen in music videos such as Dead Memories. According to Shawn Crahan, Thomson wanted number 7, because it is his lucky number. During his interview from Voliminal: Inside the Nine, he has stated that he suffers from severe joint and back pain, which on one occasion temporarily left him unable to walk, and causes him difficulty when performing.
Aside from Slipknot, he appeared as the killer for the band Lupara's "No Pity On The Ants" music video and he did a guitar solo on the song "Deliver My Enemy" by the band Malevolent Creation. On October 5, 2012, he married his long time girlfriend, Stacey Riley.