Fight style and win-loss record have nothing to do with it. These are the guys who, even if you didn't know who they were or what they did for a living, you'd cross the street if you saw them coming your way.Spread some irrational fear, perpetuate some stereotypes, and share it with your friends.Most bikers have shaved heads,(some have long hair) as well as full contact athleats.
I think you have your cause and effect turned around: the people you meet with shaved heads are, for whatever reason, already pretty intimidating.
When I had a shaved head I know it just looked silly, and as Shalmanese points out some very inoffensive people get their heads shaved.
--------------------------- Added to that Id say it emphasises your face in general so scowls etc will be more emphasised.
Id go mostly with the skinhead association and non-mainstream thing myself because monks tend to get a very different reaction.
One thing I've noticed is it seems to make them look bigger for some reason. My opinion may be in the minority, but I frequently think they look ridiculous.
My reaction, never verbalized, is "Get some hair on that thing." I like a shaved head if the man has a well shaped skull. As for making them look bigger, therefore more intimidating... (I have frequently wondered if this isn't a sexually selected trait, but that would be another thread, and, as a newbie here I don't think it's my place to start a new thread so soon.) To not be gender biased I will say the only women I have seen sans hair have been ill and it was not the look of their choice.
But not just cuz he was bald - but his actions and his values....
If your a huge biker - I don't think how the style of your hair makes you more or less "scary" unless your wearing little pink bows and pig tails Most bikers have shaved heads,(some have long hair) as well as full contact athleats.
Anything not completely mainstream will tend to provoke some negative reaction.
Finally, there may be a connection with our primitive past.
It's just one of those common misconceptions about MMA.