John DiMaggio has the kind of résumé that would leave most voice actors envious. He’s best known for his voice work on Futurama as Bender, but he also lends his talents to Adventure Time, American Dad!, and Samurai Jack. But, as we all do, he had to start somewhere. At this year’s San Diego Comic-Con, he took part in the I Know That Voice panel. The 2013 documentary is being developed into a television series, with each installment focusing on a particular voice actor and exploring their creative process and career trajectory. Before the panel, we sat down with DiMaggio to find out how he got his start in voice acting.