Standup comic and improvisational comedy specialist T.J. Miller got his first taste of television success on the popular PBS education program The Standard Deviants before landing various commercial and voice-over jobs. A classically trained actor who studied at B.A.D.A. in Oxford, England, the Denver, CO, native studied circus arts at Friches Théâtre Urbain in Paris before returning stateside and settling in Chicago. In 2007, Miller could be seen opposite Faith Ford and Jerry O'Connell in the ABC sitcom Carpoolers. Executive produced and written by Kids in the Hall alum Bruce McCulloch and executive produced and directed by Joe and Anthony Russo (Arrested Development), Carpoolers followed four suburban guys as they attempted to make sense of their lives on their daily drives to and from work.

Miller's big movie break came when he was cast in J.J. Abrams' top-secret Cloverfield (2008); however, as he played the "cameraman" in the "found footage," he was rarely seen on-screen, though his voice was frequently heard. His voice was also heard as Tuffnut in How to Train Your Dragon (2010), a role he reprised in the sequels. Miller appeared in supporting roles in Get Him to the Greek (2010), Our Idiot Brother (2011) and Seeking a Friend for the End of the World (2012). In 2014, he appeared in the big-budget Transformers: Age of Extinction and booked a series regular role on HBO's Silicon Valley.