Hoby Gilman, the Texas Ranger played by Robert Culp, was dry and somewhat unfriendly, just like Robert Culp was in most of his roles. I always liked Robert Culp when I was a kid. Years later, as an adult, I found his characters in most roles were dry and a bit abrasive.
Texas Ranger Hoby Gilman usually expects the worst from people, and often he gets it. Sometimes people turn out to be good, which not only surprises Gilman, but sometimes they make him look like a jerk.
It is interesting that the writers would occasionally show up Gilman by making him look bad, but that was the Adult Western Genre that was popular in the 1950s. Have Gun Will Travel, and Gunsmoke also had the frequent Adult Western theme of realistic stories with unhappy endings.
The stories sometimes felt pretty long even though it was only a half-hour show. Because of Gilman's personality, it seemed like a lot of the stories were fated to live up to his expectations regarding the other characters. Gilman's attitude about people makes it harder to enjoy the stories now, when I watch them as an adult.