Tristram Coffin's journey began in a Utah mining community, where he was born, before relocating to Salt Lake City to spend his formative years. It was during his high school days that he discovered his passion for acting, a pursuit he would later continue with traveling stock companies.
Following his academic achievement in speech at the University of Washington, Coffin embarked on a career in news analysis and sportscasting. However, his path took an unexpected turn when a Hollywood talent scout approached him with the proposal of transitioning into film. His striking, sinister features proved to be a valuable asset in the roles he played in serials such as Perils of Nyoka (1942) and Spy Smasher (1942),although he also demonstrated his range by taking on occasional hero roles, like the feature The Corpse Vanishes (1942) alongside the renowned Bela Lugosi.
In 1949, Coffin donned the iconic bullet helmet and gadget-laden leather jacket to portray the character of Rocket Man in the serial King of the Rocket Men (1949). For many baby boomers, Coffin's most memorable role remains that of the Arizona Ranger Captain in the 1950s Western television series 26 Men (1957).