Star Trek brought audiences a dizzying array of alien species, from one-off creations such as the Kradin and Deltans who appear in only one episode, to the fan favorites such as the Vulcans and Romulans. The Klingons, potentially the most guttural and memorable of these, have gone through a lot throughout the multiple additions to the universe. Not only have they seen various redesigns, but also slight tweaks to portrayals of their character and culture.