Well, man, there are a lot of incredible UFC fighters who aren't exactly towering over the crowd. If we're talking about fighters under 5'8", Demetrious "Mighty Mouse" Johnson immediately springs to mind. He's widely recognized as one of the greatest fighters in the history of mixed martial arts. Despite standing at just 5'3", Mighty Mouse dominated the UFC flyweight division for years, displaying an incredible combination of speed, technique, and versatility. The guy is like a dynamo, just so impressive to watch. He's proof that size doesn't always matter in the Octagon.