Even if you've never watched a single wrestling match in your life, you know who Hulk Hogan is. You also know what Hulk Hogan looks like - he's the muscular bald guy with the mustache who rips his t-shirt and dresses in a lot of red and yellow.
Hogan wasn't always bald, though. During the early 1980s, he actually had a wonderful mane of blond hair. He even fought against it when it started to recede, as we can see in this picture!