Mr. Clean, Don Limpio, Mr. Propre

As long as he cleans my dirty household surfaces, I'm not too concerned about what his name is, but I have been curious why he is called "Mr. Propre".

I remember the first time I met him. I was 5, he was 8 (the product was launched in 1963). There he was, right at my eye level, shrink-wrapped with a hot-rod, the kind where you pull the thick, plastic chain that got the cogs and wheels spinning so fast that it took off down the hallway with blinding speed. Thanks to the marketing geniuses at Procter and Gamble, my desire to have that car caused my mom to buy the lemony-fresh household cleaner. I think that was the last time she bought it because I only remember Comet and Formula 409 being used after that.

Anyway, here are Mr. Clean's other aliases. At least his good looks don't change from country to country...or do they?

The name "Clean" is usually translated into local languages:
in Canadian French, Monsieur Net;
in Spain, currently Don Limpio, it was originally launched and sold for years as 'Mister Proper' though;
in Mexico, Maestro Limpio;
in Italy, Mastro Lindo;
in Germany, Meister Proper;
in France, Monsieur Propre;
in Serbia, Mister Proper;
in Poland, Mister Proper;
in Hungary, Mister Proper;
in Bulgaria, Mister Proper.
in Russia, Mister Proper
in Puerto Rico, Maestro Limpio

From Wikipedia