It was after being laid-off from Sony that Parson decided to pursue a career in voiceover, one he entered after responding to a classified ad on the popular website Craigslist.

He subsequently appeared as the narrator in several documentaries, appearing on The Fifth Element special edition DVD and The Pursuit of Happyness DVD, as well as VH1's mini-series Fabulous Life: Really Rich Real Estate.

Parson had voiced the title role (as well as many others) on Comedy Central's animated series Lil' Bush, and has lent his voice to episodes of Fox's popular shows Family Guy, American Dad!, The Cleveland Show, and Disney's Handy Manny.

Parson has also provided voice overs for several video games; he voiced the character Yusuf Tazim in Assassin's Creed: Revelations and has provided additional voiceover work for Red Faction: Guerrilla, Infamous 2, Mafia III, Grand Theft Auto V, Skylanders: Spyro's Adventure, Prototype 2, and Overwatch.

Parson resides in Los Angeles, California and is represented by Abrams Artists Agency.