Jon St. John is an American voice actor and singer. He started his career in voice work in 1975, when he was a Top 40 radio DJ in North Carolina. Because of his vocal talent and technical skills, he was hired as a production director for several US radio stations in cities including: Norfolk, New Orleans, Philadelphia, Phoenix, San Diego, and Los Angeles. St. John was also a radio personality for many years most recently on K-EARTH 101 in Los Angeles. He has since provided the voice for numerous video game characters, most notably Duke Nukem, in addition to Big the Cat & E-123 Omega from the Sonic the Hedgehog series.