Mos Def, born Dante Terrell Smith on December 11, 1973, is an American rapper, actor, and activist. He gained fame in the late 1990s as part of the hip-hop duo Black Star alongside Talib Kweli. Known for his thought-provoking lyrics and unique style, Mos Def has released several acclaimed albums, including Black on Both Sides. In addition to his music career, Mos Def has appeared in various films and television shows, showcasing his acting talent. He has starred in projects like The Hitchhiker's Guide to the Galaxy and the TV series Dexter. Mos Def is also recognized for his commitment to social and political issues.