Board Thread:Wiki Discussions/@comment-25509684-20160731213253/@comment-27078917-20160801132404

Both, Juuzou and Juzo is correct. It just depends on how you write it. For example,  ū = uu and  ō = ou. That would make Juuzou's name = Jūzō.

So thecnically, both is correct. If you want to change it to Jūzō now, you would just have to move millions of pages or comments, mostly unessecarily.