Miller attended the University of Texas at Austinfrom 2005-2008. At UT Roy was a member of UT’s Athletics Director’s Honor Roll, a prep honor roll student who was a three-time academic all-district selection, he was named to the National Honor Roll as a junior, was very active in UT’s community service program and graduated with a degree in corporate communications. Roy was one of the strongest members of the UT squad. He played defensive tackle and short yardage fullback as a senior. He benched 500 lbs (227.3 kg), squatted 625 lbs (284.1 kg). and power cleaned 365 lbs (165.9 kg). During his years at UT Roy recorded 138 tackles, 25 TFL, 10 sacks, 44 pressures, six PBD, a forced fumble and a fumble recovery. He earned Fiesta Bowl Defensive MVP honors, was tabbed first-team All-Big 12 by the league’s coaches. A member of the second most winningest senior class to date at the University of Texas, only beat by Colt McCoy and his class the following year. Roy was a prep All-American who earned practice MVP honors at the U.S. Army All-American Bowl.