* The Roman god Vulcan: In Roman mythology, Vulcan is depicted as a strong and muscular blacksmith, often with a beard and a hammer in his hand. He's usually portrayed as being covered in soot and working in his forge, surrounded by flames and molten metal.
* The planet Vulcan: This is a hypothetical planet that was once believed to exist between Mercury and the Sun, but it has never been found. Therefore, it doesn't have a physical appearance.
* Vulcan in Star Trek: In the Star Trek franchise, Vulcans are a humanoid alien species with pointed ears, pale skin, and a calm and logical demeanor. They are known for their control of emotions and their mastery of logic and science.
Please specify which "Vulcan" you're interested in, and I can give you a more detailed description.