The guy in One Piece, I'm pretty sure his name was Roronoa Zoro. I believe his name was Zolo in the 4Kids English dub.

This is what he looks like:
[hider=Before timeskip]
[img]http://img1.wikia.nocookie.net/__cb20130822045201/onepiece/images/6/64/Roronoa_Zoro_Anime_Pre_Timeskip_Infobox.png[/img]
[/hider]

[hider=After Timeskip]
[img]http://img3.wikia.nocookie.net/__cb20141008195159/onepiece/images/5/52/Roronoa_Zoro_Anime_Post_Timeskip_Infobox.png[/img]
[/hider]

I see no problem if his name was Zolo or Zoro. It was just simple coincidence.