The reason I specify villains is because there's no need to be afraid of any the heroes,since we know that they would'nt harm us in any way. As a matter of fact,there should be a feeling of comfort around the heroes. The villains on the other hand,well that's another story altogether.
If MOTU characters existed in real life , I think I would be really afraid of Megator .
I mean,not only is he big but he kind of looks scary in my opinion . He's also ugly in the face,but scary looking at the same time. Toywise I think he is one of the coolest MOTUC figures so far .
Also,I would not want to get hit by that ball and chain weapon of his.
So what characters would you be afraid of if they existed in real life and why ?
NOTE : Even He-Man himself showed fear once . Remember in the first Powers of Grayskull mini-comic when the Soceress mentioned to He-Man something about the land of the giants ? And He-Man's reply was " G-giants" . As if he stuttered a little when he said giants . LOL . Classic stuff there .