D12 (aka The Dirty Dozen and D-Twizzy) was initially formed in 1991 by Proof who invited local Detroit rappers such as Bizarre, Eminem and other members who would leave the crew before it achieved success including Eye Kyu, Killa Hawk and Fuzz. The group was a loose collective in the vein of Wu-Tang Clan. Several members began making names for themselves in hip hop during the late 1990s. Bizarre was named Inner City Entertainment's "Flava of the Week" and Proof won a free-styling competition run by The Source in 1998.
These are photos from concerts where D12 played, so they may be of other bands that played the concert as well.
Kanrocksas Music Festival 2011 Aug 5, 2011 Kansas City, Kansas, United States Uploaded by Tom Kennedy
Eminem / 50 Cent / D12 / G Unit / Lil Jon Aug 5, 2005 Bristow, Virginia, United States Uploaded by Damian Carter
Eminem / 50 Cent / D12 / Lil Jon / G Unit Jul 11, 2005 Tinley Park, Illinois, United States Uploaded by Tttschida2188
Eminem / Cypress Hill / 50 Cent / xzibit / D12 Jun 19, 2003 Paris, Île-de-France, France Uploaded by Martin Stone
Gig On The Green Aug 25, 2001 Glasgow, Scotland, United Kingdom Uploaded by Brian.C
Gig On The Green 2001 Aug 25 - 26, 2001 Glasgow, Scotland, United Kingdom Uploaded by Theshredder84
Vans Warped Tour Jul 17, 2001 Sparta, KY Uploaded by Werewolf Of Louisville
Up In Smoke Tour Aug 4, 2000 Atlanta, Georgia, United States Uploaded by Skeeter Mc Cheese