KMD (Kausing Much Damage, or A positive Kause in a Much Damaged society) was a hip hop trio active in the early 1990s.The group is best known for launching the career of rapper and producer Zev Love X, who later became MF DOOM.Zev Love X and his younger brother DJ Subroc formed the core of KMD.The group's original third member, Rodan, left before the group signed with Elektra Records; he was replaced with Onyx the Birthstone Kid.