People are always talking about how Luffy's gonna give someone, most of the time they say Shanks' son (who they say is Makino's), the Straw Hat. But I'm gonna give y'all a dumb theory. What if Robin and Dragon or just a revolutionnary got together and had a kid during the timeskip. You can easily debunk this by the fact that Robin's abs aren't... "damaged" (wrinkled and stuff). Okay, what if Sabo and Koala get together and Luffy gives it to... F it, you get my idea.