This family tree leads to a bit of confusion regarding whether Shredder's given name is Oroku and his last name Saki (as indicated by the fact his brother shares the name Saki), or the other way around (as indicated by the fact his ancestor's last name is Oroku). This question is never resolved on the show, although Mirage comics adds more evidence for Oroku being the family name; Saki's brother is "Oroku Nagi". This follows Japanese naming conventions, which place the family name before an individual's given name.