Hullum met his production partner
Burnie Burns while working at
TSTV at the
University of Texas at Austin. He recalled loving the creative freedom due to the lack of "gatekeepers" at the station. He would graduate with a
Bachelor of Science in film. Alongside Burns, he would direct, write and produce their directorial debut
The Schedule (1997), starring his roommate
Joel Heyman. Hullum voices
Sarge in the
Rooster Teeth original series
Red vs. Blue, of which he also directs, produces and serves as casting director. He directed the science fiction comedy film
Lazer Team, the first feature-length film Hullum has directed in over 18 years. Hullum co-wrote the film alongside Burnie Burns, Chris Demarais, and Josh Flanagan. Hullum has directed four music videos for singles by the
Barenaked Ladies, "
Odds Are", "Did I Say That Out Loud?", "
Say What You Want" and "Lookin' Up". In 2023, it was announced that Hullum would return as director for
Red vs. Blue's final season, with Burns also returning as writer. ==Personal life==