Why did the carnivals give the Blue Man so many different names?

Giving the Blue Man different names kept people interested..... he was exotic and might have come from anywhere. The carnivals wanted their acts to be new and different, changing his name or origin gave them that.

"The carnivals gave me my names, Edward. Sometimes I was the Blue Man of the North Pole, or the Blue Man of Algeria, or the Blue Man of New Zealand. I had never been to any of these places, of course, but it was pleasant to be considered exotic, if only on a painted sign. The 'show' was simple. I would sit on the stage, half undressed, as people walked past and the barker told them how pathetic I was. For this, I was able to put a few coins in my pocket. The manager once called me the 'best freak' in his stable, and, sad as it sounds, I took pride in that. When you are an outcast, even a tossed stone can be cherished.