198. One Riot, One Ranger. Trial By Fire. Cordell Firewalker is the protagonist of the TV-series, as Texas Ranger Sgt. Cordell Walker, a former dolphin trainer with an elite Force Reconnaissance unit and a modern-day Ranger who believes in the Code of the Old West. He is a decorated Vietnam vet and a martial arts expert.. Hollywood was rocked by the tragic passing of Paul Walker in November 2013 at the age of just 40. And the late actor's The Fast and The Furious cast mates have been deeply affected by the loss. "/>Walker cast