Mario Mosley attended the UCLA School of Theatre, Film and Television and has performed in numerous films, commercials, television and stage productions throughout the United States, Europe and Asia. Some of his film credits include Dreamgirls, Walk Hard and Baseketball. Television credits include MADtv, Malcolm & Eddie, Hype, and The Parkers. His stage credits include Michael's Jackson's Sisterella, Wedding Band, Play On!, and the role of Clopin in Notre Dame De Paris. Most recently he played the role of L. Ron Hoover in the world-premiere of multi-award nominated, Frank Zappa's... Joe's Garage.

Mario is also a successful choreographer, having choreographed for The World Music Awards, Nickelodeon, MADtv, as well as several commercial, television and live shows. Currently, Mario can be seen on the hugely successful Dance Your Ass Off where he is one of the choreographers/pro dancers.

Mario's many talents have given him the opportunity to work with some of the entertainment industry's most recognizable names, including Beyonce, Justin Timberlake, Jamie Foxx, Britney Spears, Eddie Murphy, The Pussycat Dolls, Rod Stewart, Kelly Clarkson, Jennifer Hudson, Debbie Allen, Zac Efron, Prince, Michael Jackson, Snoop Dogg, and Gloria Gaynor.