After nine years since Mathis starred in his first feature film ''Breakin' the Rules
Mathis went on to make many guest appearances in television shows like ER, Guys Like Us, Pacific Blue and City of Angels''. His first main role was the character Bruce in the
VH1 show ''
I Hate My 30's''. Mathis started voice over providing the English voice of Sigint in the English version of the video game
Metal Gear Solid 3: Snake Eater. He voiced
Black Panther in ''
The Avengers: Earth's Mightiest Heroes (2010–2012) and reprised the role in Avengers Assemble'' (2013–2019) and numerous video games. == Filmography ==