A mysterious character named Jack will supposedly emerge in chapter 806 of "One Piece," and fans are eager to learn more about him.

According to Movie News Guide, almost nothing is known about this new character named Jack, other than the fact that he appears to possess a lot of power. 

Jack is the one supposedly responsible for the massive amount of damage that has been spread out onto Zou Island, and if that is the case, then his power does indeed pose a threat to the Straw Hat Pirates.

As of now, most "One Piece" fans believe that Jack will be the main adversary for the Straw Hat Pirates in chapter 806 of the manga, although that has not been confirmed as of yet.

What's also unclear is the motivation behind Jack's fearsome attack on Zou Island, although some fans have speculated on this very topic.

It is believed that Jack and Doflamingo have some kind of connection, and may have even possibly forged an alliance in the past, and that may be the reason behind his attacks. Jack may even be on his way to rescue Doflamingo, setting up the stage for what could be an incredible encounter between this mysterious figure and the Straw Hat Pirates.

In related news, it looks as though "One Piece" fans will have more than just manga chapters to look forward to in the future.

A special event being called the "One Piece Run in Okinawa 2016" will be taking place soon, according to Crunchyroll.

The 3.42 mile run will be held inside the town of Chatan in the Nakagami District of Japan's Okinawa Prefecture. Fans who will be participating in the race will get to see a course that has been dressed up to look like it was ripped straight out of the pages of "One Piece."

The race will take place on March 20, 2016, with registration for it already underway.