While ostensibly a Western, the series routinely includes elements of the science fiction and steampunk genres. Humor is a large part of the show; the writers attempted to keep the jokes and situations "just under over-the-top". A large number of episodes involve the Orb, a powerful device from the future. John Astin plays Professor Wickwire, an inventor who assists Brisco with anachronistic technology including diving suits, motorcycles, rockets, and airships. The search for new technology and progressive ideas, what the writers of the show called "The Coming Thing", is a central theme throughout the series.