Rob Mayes is an American actor and musician. Rob is best known for portraying the titular character in the cult Sundance film favorite John Dies at the End alongside Paul Giamatti and Clancy Brown, and directed by horror legend Don Coscarelli. Other films include Burning Blue, Ice Castles, The American Mall, and Different Flowers (out now in theatres) and Warner Brothers' upcoming Deep Blue Sea sequel. He is also known for playing musician Marc on two seasons of ABC's Mistresses, where some of his original music can be heard, and for playing Derek on Lifetime's The Client List with Jennifer Love Hewitt. Other television credits include Frequency, Legends, Finding Carter, Jane By Design, 90210. As a musician, Rob has toured Europe and performed in Cleveland, New York, and Los Angeles. As a songwriter and artist, following his time in the military he released the album Glimpses of Truth and more recently singles All It Takes and You Don't Know It which all can be found on iTunes, Spotify, and Tidal. A forthcoming album will be released later this year.

He lives in Los Angeles with his dog Rock.