Matthew Jay "Matt" Hullum is an executive producer of RWBY. He is the Chief Content Officer of Rooster Teeth Productions, which he founded alongside Burnie Burns and three others in 2003. He was the CEO from 2012 to 2019. He is well known for playing the role of Sarge in the popular web series Red vs. Blue.
Matt continues to write, produce, direct and appear in many shows at the company. He also wrote and directed the feature film Lazer Team in 2015. He is married to Anna Hullum, who voices Raven Branwen in RWBY.
- Matt also read for the role of Ozpin, but Shannon McCormick was cast instead. It has been stated that he will eventually have a significant voice acting part in the show.