There's happy news for "One Piece" fans. Chapter 806 is coming and it promises new challenges for Luffy and the Strawhats.

It was revealed in chapter 805 of the popular manga that Captain Jack was responsible for the decimation of Zou, prompting fans to wonder just who this mysterious captain is.

Captain Jack was first seen on a ship with an elephant's head as a crest, which readers later learned was called Zunisha. Large elephant-like footprints were also seen on Zou so there's the possibility that the Captain has his own, unique kind of devil fruit.

But after the destruction of the island of Zou, fans are wondering just how strong Captain Jack is and whether or not he will be Luffy and the Strawhats' next big enemy.

Captain Jack was also seen trying to get Doflamingo away from Admiral Fujitora, Vice-Admiral Tsuru and Sengoku, the former Fleet Admira. This act could mean that Captain Jack might have some relation to Kaido since Doflamingo is a key player in Kaido's plan and ensures that his planned attack on the world will not be stopped. To recap, Doflamingo is responsible for pumping his army full of Zoan users. Captain Jack's actions could also mean that Doflamingo might return in upcoming chapters.

However, if Doflamingo does return or if Captain Jack continues with his wave of destruction, can Luffy defeat them? At this time, no one knows what Luffy is up to, except that he has left with the Mink Woman.

Fans are also concerned about the fate of the other members of the Strawhat crew and are hoping that Chapter 806 will answer their questions. No one knows what happened to the crew, whether they have been killed or turned to animals. However, after everything that the crew has been through, most fans find it hard to believe that they will be defeated easily.

Chapter 806 of "One Piece" is set to be released on Nov. 9.