Wrestling
     In high school, Muñoz was a two-time California State Wrestling Champion at 189 pounds for Vallejo high school, Asics First Team All American and the 1996 NHSCA National High School Champion. As a collegian at Oklahoma State University, Muñoz captured two Big 12 titles and earned back-to-back All-America honors at 197 pounds, including his NCAA title as a senior in 2001. He became the first Filipino American at the Division I Level to win a National Championship. He also made the NWCA All-Academic Team for three years and the Big 12 All-Academic squad for four. Additionally, Muñoz was a three-year member of the FILA Junior World Wrestling Team, earning the silver medal in 1998. Muñoz received a Bachelors of Science Degree in Health Science from Oklahoma State University.

Mixed Martial Arts
     Muñoz made his WEC debut at WEC 34 on June 1, 2008 in the Arco Arena in Sacramento, California. Muñoz defeated Chuck Grigsby via KO (Strikes) at 4:15 of the first round. Muñoz was slated to fight Steve Steinbeiss in WEC 36 on November 5, 2008, but due to an undisclosed reason he was replaced by TUF alum Alex Schoenauer. Due to the latest news that WEC will be dropping their light heavyweight and middleweight classes. Muñoz is a candidate to be relocated to WEC's sister promotion, which is also owned and produced by Zuffa, UFC. Along with light heavyweight champion Steve Cantwell and middleweight champion Paulo Filho. Other candidates are Brian Stann, Chael Sonnen, and Jake Rosholt. Muñoz goes by the moniker "The Philippine Wrecking Machine" and sports Philippine colors on his Muay Thai trunks almost like what UFC light heavyweight contender, and also a proud Filipino, Brandon Vera wears.