D12 (also known as D-12, The Dirty Dozen, D-Twizzy, D-Tizzle and Detroit-Twelve) is an American hip hop group from Detroit, Michigan. D12 has had chart-topping albums in the United States, United Kingdom, and Australia. D12 was formed in 1990, but only achieved mainstream success when one of its members, Eminem, rose to international fame and notoriety.
History
Early career
Proof formed D12 as a rap collective of local Detroit MCs including Bizarre, Eminem, Eye-Kyu, Killa Hawk, Fuzz Scoota and himself. The group was a loose collective in the vein of Wu-Tang Clan. The original concept of D12 was to have 12 of Detroit's most talented rappers. However, Eminem, Proof, Eye-Kyu, Bizarre and the other members at the time were unable to find 12 rappers who were good enough. Proof decided, in order to have 12, the six members would create an alter-ego. Proof chose Dirty Harry. When Eminem found out Proof took that name, he decided on Billy The Kid. This was Eminem's first Dirty Dozen alte
Source:
http://en.wikipedia.org/wiki/D12