Otis Jackson Jr., known professionally as Madlib, is an American DJ, music producer, multi-instrumentalist, and rapper. He is widely known for his collaborations with MF DOOM, J Dilla, and Freddie Gibbs. Madlib has described himself as a "DJ first, producer second, and MC last." His stage name is an acronym for "Mind Altering Demented Lessons In Beats".

Daniel Dumile, also known by his stage name MF Doom or simply Doom, was a British-American rapper and record producer. Noted for his intricate wordplay, signature metal mask, and "supervillain" stage persona, Dumile became a major figure of underground hip hop and alternative hip hop in the 2000s. After his death, Variety described him as one of the scene's "most celebrated, unpredictable and enigmatic figures".