D12 (also known as D-12, The Dirty Dozen, D-Twizzy and Detroit-Twelve) is an American hip-hop group from Detroit, Michigan, which has had albums reach the top of the American, British, and Australian album charts: Devil's Night in 2001 and D12 World in 2004. D12 was formed in 1990, but only achieved mainstream success when its most accomplished member, Eminem, had risen to international fame and notoriety. Previously, D12 had been a notable contributor in the underground rap scene.After all six members were established, the group made a promise to each other that the first member to achieve solo success would come back for the others.

The first member of the group to achieve solo success was Eminem. After he recorded an independent EP called The Slim Shady EP in 1997 that caught the attention of famed rap producer Dr. Dre and Interscope CEO Jimmy Iovine, and he was quickly signed to Aftermath/Interscope records. Eminem stuck to his pact, and Dr. Dre once stated that while making The Slim Shady LP, his debut album, he kept insisting that he go back to sign the others. Dr. Dre told him to first establish himself as a solo artist, then go back for his friends.

In 1999 he released his hit debut The Slim Shady LP and quickly rose to super stardom, as The Slim Shady LP went on to sell four million copies in the United States. Having taken Dre's advice, he had established himself as a solo artist and decided it was time to gather his friends. As a way to establish D12, he created Shady Records under the Interscope imprint. He then made D12 the first act to be signed to Shady/Interscope Records.

The group has released two albums, Devil's Night and D12 World. Both albums debuted at number one on the Billboard music charts in the U.S. and topped the charts in many other countries. The two albums' hit singles included "Purple Pills", "Fight Music", "My Band", and "How Come".

D12 also made a song, Lies & Rumors, for the Shark Tale soundtrack.

The group was often overshadowed by Eminem's massive success, and toured without him for the second album while Eminem was busy recording Encore. Although shadowed by Eminem's success, other members Bizarre and Proof managed to prevail with mildly successful solo careers with the releases of Hannicap Circus and Searching for Jerry Garcia in 2005. D12 (minus Eminem) appeared on Tech N9ne's 2002 album entitled Absolute Power on the track "She-Devil". They also decided that Eminem would not be as prominent on their upcoming third album, which remains evident even after Proof's death. Their third album is estimated to be 70% completed with yet any input from Eminem.

  Current members

D12 currently consists of five members

• Eminem (Marshall Mathers III) a.k.a. Slim Shady
• Swift (Ondre Moore) a.k.a. Swifty McVay
• Kuniva (Von Carlisle) a.k.a. Rondell Beene
• Kon Artis (Denaun Porter) a.k.a. Mr. Porter
• Bizarre (Rufus Johnson) a.k.a. Peter S. Bizarre

 Deceased members
Bugz (Karnail Pitts), a.k.a. Robert Beck; shot and killed on May 21, 1999)

Proof (DeShaun Holton), a.k.a. Dirty Harry; shot and killed on April 11, 2006)

 Former Members

Eye-Kyu

Fuzz Scoota

Killa Hawk