Owner of the ranch and Hank's master, High Loper is an old-fashioned cowboy who enjoys roping, riding and working his ranch. While Loper never wants to leave the ranch and is loath to go out of town, he is far from a workaholic, settling for shoddy workmanship on many of his projects and pawning the dirty work onto his ranch hand, Slim Chance. His more anti-social cowboy instincts have been tamed by his wife, who he loves. However, in some episodes he expresses nostalgia for the times when he was just a simple cowboy.

In "Murder in the Middle Pasture" when Sally May is giving Slim a lecture on he will understand the importance of social events when he is married, Loper mouths the words "no you won't" behind her back. While Loper makes fun of Hank frequently and is often angry at him, he also relies on Hank to help with the cattle herding. In "Every Dog Has His Day" Hank saves Loper from some quicksand, proving his loyalty to his master.