Tony Nick was a former member of the US special forces, until he was denied of further service after he killed a fellow soldier for career placement. He was promoted 4 times and demoted once for a violent arguement with another soldier. He wandered around, looking for a new career for 2 years. However, when he heard the about the zombie outbreak, he immediatly snapped to action. He got his military uniform on and his MP5 and immdiatly joined the other zombie resistance fighters. The rest is history.