User blog comment:Kaido King of the Beasts/Chapter 821: Last March of the Elephant/@comment-5303512-20160331140559/@comment-24442815-20160331143127

We probably won't see Jack for a while, but I doubt he is actually dead. Some people thought he died last time when he tried to save Doffy, but yet he survived. I think this was just a temporary solution so they could pick up the pace and move on to the next arc. Jack will be back *looks at God Serena* can't say the same for him.