<p>Not much is known about Jack. Thus far, <strong>Jack has only been mentioned three times</strong>.</p>

<ol>
<li>In chapter 692 during <a href="https://i.sstatic.net/Z4Lin.jpg" rel="nofollow noreferrer">the failed experiment by Caesar</a></li>
<li>In chapter 801 during the escort of Doflamingo</li>
<li>In chapter 805 during the explanation of the destruction of Zou.</li>
</ol>

<p>The only thing we seem to learn from this is that <strong>he is related to Kaidou</strong>, but we don't know the reason he was send by Kaidou to Doflamingo and why he destroyed Zou. My personal guess would be that Kaidou sent Jack to Doflamingo (as was seen in number 1) to prepare for <em><a href="https://i.sstatic.net/M5HqN.jpg" rel="nofollow noreferrer">the last battle</a></em> as Kaidou said in chapter 795:</p>

<blockquote>
  <p>Goddamn it, hurry the hell up, Joker! Get everything ready for our last battle! A world this mundane isn't worth keeping around! Time to light the match to the greatest war this world has ever seen!</p>
</blockquote>

<p><strong>Jack probably came by Zou and destroyed it</strong>, because that seems to be what he does. Kaidou's underling seemed to have warned Kaidou something bad would happen if they send out Jack.</p>

<p>Finally, <strong>he isn't one of the 7 warlords</strong>. The five remaining confirmed warlords are Mihawk, Kuma, Hancock, Buggy and Weevil after Doflamingo and Water Law were stripped of their title. There has been no mention of a new warlord ever since Fujitora apologized for such a system even being in place.</p>

<p>My personal guess would be that <strong>there might not even be more warlords</strong>. It seems many of the Marines dislike the system (eg: Sengoku, Fujitora, Smoker, etc) and they might want to take this opportunity to get rid of it. Especially seeing 3 out of 6 ex-warlords blatantly abused the system to get away with their evil deeds and did more harm then good by being a warlord (ie: Crocodile, Doflamingo and Teach)</p>

CC BY-SA 3.0
2015-11-01T23:15:27.943Z
2015-11-01T23:15:27.943Z
Peter Raeves
<p>The name of Captain Jack first appeared in <a href="https://i.sstatic.net/k6Rlb.jpg" rel="nofollow noreferrer">Chapter 801</a> when Doflamingo was escorted by the Navy to Impel down following his defeat by the StrawHats in Dressrosa. </p>

<p>Captain Jack seems ready to take on the might of a Marine Admiral Fujitora and former fleet admiral Sengoku in order to rescue Doflamingo. Captain Jack again appears in the most recent <a href="https://i.sstatic.net/Jla48.jpg" rel="nofollow noreferrer">chapter 805</a>.</p>

<p>Is anything known of Captain Jack? Is he one of the unknown shichibukai? </p>

CC BY-SA 3.0
2015-11-01T21:55:54.083Z
I edited your question to be a bit less opinion based. If I broke the context feel free to edit/revert it.
Dimitri mx
<one-piece>
Who is captain Jack?
# Who is captain Jack?
Posted by: username_0 on 2015-11-01
The name of Captain Jack first appeared in [Chapter 801](https://i.sstatic.net/k6Rlb.jpg) when Doflamingo was escorted by the Navy to Impel down following his defeat by the StrawHats in Dressrosa.

Captain Jack seems ready to take on the might of a Marine Admiral Fujitora and former fleet admiral Sengoku in order to rescue Doflamingo. Captain Jack again appears in the most recent [chapter 805](https://i.sstatic.net/Jla48.jpg).

Is anything known of Captain Jack? Is he one of the unknown shichibukai?
**Tags:** one-piece
> **Comments:**
> **username_1**: I edited your question to be a bit less opinion based. If I broke the context feel free to edit/revert it.  
---
## 1 answers
### Answer by username_2 on 2015-11-01. Score: 2 | Accepted answer
Not much is known about Jack. Thus far, **Jack has only been mentioned three times**.

1. In chapter 692 during [the failed experiment by Caesar](https://i.sstatic.net/Z4Lin.jpg)
2. In chapter 801 during the escort of Doflamingo
3. In chapter 805 during the explanation of the destruction of Zou.

The only thing we seem to learn from this is that **he is related to Kaidou**, but we don't know the reason he was send by Kaidou to Doflamingo and why he destroyed Zou. My personal guess would be that Kaidou sent Jack to Doflamingo (as was seen in number 1) to prepare for *[the last battle](https://i.sstatic.net/M5HqN.jpg)* as Kaidou said in chapter 795:

> Goddamn it, hurry the hell up, Joker! Get everything ready for our last battle! A world this mundane isn't worth keeping around! Time to light the match to the greatest war this world has ever seen!

**Jack probably came by Zou and destroyed it**, because that seems to be what he does. Kaidou's underling seemed to have warned Kaidou something bad would happen if they send out Jack.

Finally, **he isn't one of the 7 warlords**. The five remaining confirmed warlords are Mihawk, Kuma, Hancock, Buggy and Weevil after Doflamingo and Water Law were stripped of their title. There has been no mention of a new warlord ever since Fujitora apologized for such a system even being in place.

My personal guess would be that **there might not even be more warlords**. It seems many of the Marines dislike the system (eg: Sengoku, Fujitora, Smoker, etc) and they might want to take this opportunity to get rid of it. Especially seeing 3 out of 6 ex-warlords blatantly abused the system to get away with their evil deeds and did more harm then good by being a warlord (ie: Crocodile, Doflamingo and Teach)
---
