Dillon's hallmark work, Preacher, is a tale of powerful God-children, backstabbing vampires, and true love, as told with Garth Ennis. Dillon's artwork was the only possibility to make Preacher's romance horror western format work, and work superbly. Dillon's linework is sparse and dramatic, and his characters are always dead-on recognizable and have a wide range of expressions. In a book like Preacher, with hundreds of cast members, nothing is more important. Plus, he draws so simply and matter-of-factly, that his terrible gore just seems all the more frank and gruesome.