First of all, the first point is Karp's strength. We have always been curious about the strength of Luffy's grandfather Karp. Although he is said to be a naval hero, he defeated the powerful Rox pirates and kept running after Roger, in fact, we have never really seen his strength, and we don't know where his strength came from. There is little description of him in this respect, and he is old now, but it seems that his strength has not regressed, so the answer in this respect is always a place for Haimi people to discuss. How strong is Karp now? Will his physical strength decline with age? In fact, if such a mystery is not solved, it will always lead to discussion. There's no need to untie it.
Secondly, there is the source and strength of the five of them. We can always see that the five stars play a very important role in the world congress, but in fact, we know nothing about their strength and their sources. Will they finally have a battle with Luffy? How strong are they? Are they all dragons and everyone? The mystery about the five stars has not been completely solved. I wonder if it is possible to solve it in the future?