On television, Schwartz guest-starred as Jean-Ralphio Saperstein on NBC’s Parks and Recreation and is a lead in the Showtime show House of Lies with Don Cheadle, Kristen Bell and Josh Lawson. In 2010, Schwartz played series regular Bill Hoyt on J. J. Abrams' one-hour spy drama Undercovers for NBC. He has voiced Leonardo in Rise of the Teenage Mutant Ninja Turtles and Sonic in Sonic the Hedgehog
Also he has voiced Stuffy the dragon in the Doc McStuffins spin-off TV series The Doc Files, and Ben performs the voice of Donald Duck's nephew Dewey Duck (the blue-wearing middle nephew) on Disney's DuckTales (2017). He was also a vocal consultant for BB-8 in Star Wars: The Force Awakens. He even played Rilo in the Tron: Uprising episode "The Renegade: Part 1".