Mokubei- A pipe maker who lives on/in top of Mount. Fuji. He always seems to be making an odd gesture which by many has been taken very sexually. But who knows, seeing as he does proclaim want for girls to cheer about Goemon's fashionable pipe. Lewd sexual innuendo, have been the center of much dialogue in the series.
He went to Mount. Fuji to become the greatist worker in Japan.
"...train hard so that one day girls will cheer for you saing 'Oh My! That pipe you have is so fashionable!'" --Right after giving Goemon the new Chain pipe.