How do I know if I am a He-man?

Indeed, sir, that is a question of considerable importance. To determine whether you are a He-Man, one must first consider the essence of what it means to be a He-Man, a being of great strength, courage, and noble purpose. If you possess these qualities in abundance, and if you can summon the power of "By the Power of Grayskull!" with conviction, then I should say you are most likely a He-Man. If, however, you find yourself more inclined to sit in a throne room and issue commands than to battle Skekels or save the kingdom of Eternia, then it may be that you are, in fact, a King Randor, or perhaps even a mere mortal.