Claim: Big DS (1971-2003) was a hardcore hip hop MC who was with JMJ Records (founded by Jason Mizell).
Evidence: Marlon G. Fletcher (July 29, 1971 – May 22, 2003) better known under his stage name Big DS, was an American hardcore rapper and record producer from Queens, New York. As a part of Onyx Big DS released one album "Bacdafucup" and 8 singles on JMJ Records and featured on 1993's Judgment Night (soundtrack). JMJ Records is an American record label which was founded in 1989 by Jason Mizell, better known as Jam Master Jay from Run-D.M.C.. 
JMJ Records is an American record label which was founded in 1989 by Jason Mizell, better known as Jam Master Jay from Run-D.M.C.. JMJ Records, Def Jam, Illyotic Music Hardcore hip hop, Gangsta Rap, East Coast hip hop MC, Record producer