Roots of MF Grimm

Robert A. Hall Jr., known by his stage name Lord Finesse, is an American rapper and hip-hop producer from The Bronx, New York, best known as the leader of the D.I.T.C. crew. About.com ranked him number 29 on its list of the Top-50 Hip-Hop Producers.

William Paul Mitchell, better known by the stage name of Large Professor, is an American rapper and record producer. Based in New York City, he is a founding member of the underground hip-hop group Main Source, and is credited with having discovered and mentored fellow New York City-based rapper Nas. About.com ranked Large Professor at No. 13 on its Top 25 Hip-Hop Producers list.

Nathaniel Thomas Wilson, better known by his stage name Kool G Rap, is an American rapper. He began his career in the mid-1980s as one half of the group Kool G Rap & DJ Polo and as a member of the Juice Crew. He is widely considered to be one of the most influential and skilled MCs of all time, and a pioneer of mafioso rap/street/hardcore content and multisyllabic rhyming. On his album The Giancana Story, he stated that the "G" in his name stands for "Giancana", but on other occasions he has stated that it stands for "Genius".

KMD was an American hip hop trio active from 1988 to 1994, during the golden age. The core of the group was composed of brothers Zev Love X and DJ Subroc. The group's original third member, Jade 1, left before the group signed with Elektra Records, being replaced with Onyx the Birthstone Kid. The group dissolved in 1994 following the sudden death of DJ Subroc in 1993, the departure of Onyx and conflicts with Elektra that resulted in them being dropped from the label.

Daniel Dumile, also known by his stage name MF Doom or simply Doom, was a British and American rapper, songwriter, and record producer. Noted for his intricate wordplay, signature metal mask, and "supervillain" stage persona, he became a major figure of underground hip hop and alternative hip hop in the 2000s, and has been widely regarded as one of the greatest and most influential lyricists in underground rap.

Dwight Conroy Farrell, better known by his stage name Count Bass D, is an American rapper, record producer and multi-instrumentalist who resides in Millheim, Pennsylvania. His production style is characterised by layers of short MPC samples and film snippets complemented with live instrumentation, and eccentric lyrics laid atop.