During events relating to the Enelsian Invasion, Lonestar was one of several superheroes who refused to cooperate with government officials.
Several heroes not based in Astro City, have names and sometimes even powers derived from some aspect of their area of operations. Lonestar is a prime example. His name references from Texas being the Lone Star state and Austin being the state capital. The name also suggests that he is something of an outlaw hero who probably prefers to work on his own terms.