No one in the story imagined the possibility of Gol D. Roger having a son, as we know Ace, much less expect him to be raised by one of Roger’s enemies. But what a perfect way to conceal the truth. Now I think Kaido raised Jack with similar intentions as Garp did when taking in Ace.
Garp wanted Ace to join the Navy. But, what Kaido cares about most of all is strength and power, and that’s what he saw in the little mammoth boy. In a recent chapter it was mentioned that Jack was hand pick by Kaido as one of his All Stars(lead performers) for this reason.
Another notable trait that parents in the series tend to pass down to their children is strength, and as Whitebeard’s son Jack would be considered one of the mightiest pirates out there. He has quite some feats under his belt. He was able to sink 2 marine battleships and then clash with two Navy legends such as a former fleet admiral Sengoku and vice admiral Tsuru, let alone admiral Fujitora and come out relatively unscathed. He took Zunesha’s trunk head on and survived.
He single handily took on an army of Sulong minks and beat them(Nekomamushi and Inuarashi notwithstanding). The World Government and the Marines find him a big enough threat to warrant him a 1 billion berry bounty at only 28 years of age. Which is commendable amongst his contemporaries. His fellow All Stars with higher bounties are both older than him as well as Big Mom’s Sweet Commanders and the remnants of the Whitebeard Pirates. We can assume Blackbeard and Shanks’ Commanders as well average between 30-40 years old. Luffy doesn’t count because although commendable with a bounty of 1.5 billion berries, he is a contender for King of the Pirates and as such it is to be expected of him.
Even if Jack is Whitebeard’s son so what?
I believe this doesn’t take away from Whitebeard or his message of family not being limited by blood relation. Even if he is Whitebeard’s biological son he would not be anymore a son to him then the Whitebeard Pirates were.
Much like how Ace condemned Gol D. Roger as a terrible father. Much of Jack’s personality can be summed as being raised by Kaido. Yamato is a year older than Jack meaning that they grew up together under Kaido, I think we are bound to get more information once we get to Kaido’s flashback. I believe Luffy will befriend Jack and if he does then Luffy will have befriended the children of 3 out of the original 4 Emperors, in Katakuri, Yamato and Jack. Shanks not included. Unless he turns out to be the father of Makino’s son, in which case only time will tell. But I think this has relevance for the story because then the children of the four Emperors(Katakuri, Yamato, and Jack) along with Luffy and the rest of the Supernovas will bring about the new era, and end their parents era.
*Theory by Bf-37
