User blog comment:ChiroSamai94/Brook the last crew member?/@comment-130.65.211.13-20120508074114

Luffy said he wanted a crew of 10 members. Excluding Luffy that would be Jinbe and one more. And Oda said in an interview that the last member will be someone we havent seen yet. Besides Luffy doesnt need a large crew. Almost everyone he meets becomes his ally.