Madvillain is a hip-hop duo consisting of rapper MF DOOM and producer Madlib. They are known for their unique sound that blends intricate lyrics with experimental beats. Their most famous album, Madvillainy, was released in 2004 and has since gained a cult following for its innovative approach to hip-hop. The duo's style is characterized by MF DOOM's complex wordplay and Madlib's eclectic sampling. Their collaboration is celebrated for its artistic depth and has influenced many artists in the genre. Madvillain remains a significant name in underground hip-hop, known for pushing creative boundaries.