Formed in 1996, the group achieved mainstream success with its lineup of de facto leader Eminem,[3] Proof, Bizarre, Mr. Porter, Kuniva and Swifty McVay.

[4] The group released the albums Devil's Night in 2001 and D12 World in 2004, spawning numerous hits such as "Shit on You", "Purple Pills", "Fight Music", "My Band" and "How Come" throughout that period.

Between 2008 and 2015, D12 released three official mixtapes with the core lineup reduced to Bizarre, Kuniva and Swifty McVay, with isolated token appearances by Eminem and some contributions from Mr. Porter and Fuzz Scoota.

On August 31, 2018, Eminem released his tenth studio album Kamikaze, containing a song titled "Stepping Stone", announcing that D12 had officially disbanded.

[6] D12 was initially formed in 1996 by Proof who invited local Detroit rappers such as Bizarre, Da Brigade members Mr. Porter and Kuniva, and Bugz.

The album went on to sell four million albums worldwide and two million in the U.S. D12 World was released on April 27, 2004, featuring production by Eminem, Mr. Porter, Dr. Dre and Kanye West, and guest appearances by Obie Trice on the track "Loyalty" and B-Real of Cypress Hill on the track "American Psycho II".

It debuted at the top of the U.S., UK,[9] and Australian albums charts, and at number two in Germany—selling over half a million records in its first week of release in the U.S. alone.

[18] On August 25, 2014, a press release on Eminem's official website also revealed D12 to be featured on the label's upcoming two-disc compilation album, titled Shady XV.

[20][21] On August 31, 2018, Eminem released his tenth studio album Kamikaze, containing a song titled "Stepping Stone", announcing that D12 had officially disbanded.

[6] In 2021, Devil's Night was re-released digitally as an expanded edition to celebrate the 20th anniversary of its release which featured three bonus tracks, an unreleased freestyle, and the instrumentals.

In 2023, former members Swifty McVay and Kuniva reunited and opened for several shows of Snoop Dogg's I Wanna Thank Me Tour, in which they performed D12 songs.