Besides the dead ringer of One Piece major characters, what fans care about more is the so many mysteries that are yet to unravel.

Which is the most curious mystery in the One Piece world according to you?

10. Who is "Joy Boy"?

"Joy Boy"was a man from the surface world who played an important role in the history of the Fishman Island.

He was first mentioned on the Ryugu Poneglyph read by Nico Robin while at the Sea Forest.

9. What's Kaido's Ability?

Kaido is one of the Yonko, and the third to be mentioned by name. He is also one of the central antagonists of the Pirate Alliance Saga.

According to Trafalgar Law, Kaido is known as the "strongest creature in the world".

8. Final Chapter

Just when you think One Piece's current Marineford Arc is blowing your mind away, Oda gives us a huge teaser regarding the final One Piece chapter in an interview.

Interviewer : Many are looking forward to what happens next in One Piece. Could you give us a message for them ?

Oda : One thing that motivates me to keep drawing One Piece is that I want to draw the last chapter. The last chapter is amazing! I imagine a final chapter that will make the Marineford arc look like nothing.

Interviewer : Seriously ?!

Oda : The Marineford arc really felt like a side trip to me. I didn’t expect it to be so popular. So I don’t know how readers will take this one. But the thing I think is really interesting will be in that last chapter. Until then, I’d like as

many of the fans as possible to stick with me.

7. What Happened to Zoro's Left Eye?

6. What Happened in the Void Century?

The Void Century also referred to as the Blank Century (100-Year Void in the Viz manga), was hinted at during the Skypiea arc; the dates were seen in Robin's flashback.

It is a century-long gap in recorded and archaeological history, the study of which is forbidden by the World Government. These events occurred 800 to 900 years before the current storyline.

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5. Who Will Be The 10th Member of The Straw Hat Pirates?

4. What's Dragon's Ability?

He is the infamous Revolutionary leader who has been attempting to overthrow the World Government.

He is the World Government's greatest enemy and is the most dangerous and most wanted man in the world.

3. What is "One Piece"?

One Piece is a legendary treasure said to be of unimaginable value.

It is said that it was hidden somewhere deep in the Grand Line, presumably in the last island, Raftel, by its deceased owner, the Pirate King Gol D. Roger.

2. Who's Luffy's Mother?

Are you more curious to know who's Luffy's mother, than to find what One Piece is?

1. What does "The Will of D" means?

In the series, a number of characters have the middle initial "D.". This mysterious middle initial has been called the "Will of D" or "D's will" by several characters in One Piece.

Some translations mistakenly refer to it as "Gol D's will" in reference to Gol D. Roger, the late pirate king.

The English dub by 4Kids chooses to refer to the D as the "Gol D.'s will", while the FUNimation dub refers to it simply as the "Spirit of D." both deriving from a mistranslation of the original Japanese text.

In the recap supplement Grand Line Times, they were referred to as the "Men of D."

So, what's your thoughts about these mysteries in the anime?

(source:fasttopten.com)