Thread:NewGenTV/@comment-25213123-20141216182015/@comment-5916303-20141216191042

Those are all fan-subs, held from previous fan subs that were used for the manga. Some still spell Esudesu and Mein. The closest we have to legitimacy is Crunchyroll, until an official English version of the manga arrives.

Though, even they can be wrong. Characters from a manga called "One Piece" are constantly "misspelled" since the author has a different viewing of their names in English. Like I already said, there's no right or wrong here.