
Theory: Could this be the identity of Luffy's mother?
When it comes to the question of Luffy’s mother, I see two possibilities. Either she will never appear, seeing as how biological parents in general aren’t all that relevant in One Piece anyway. Dadan is Luffy’s true mother because she is the one who raised him. The other possibility is that she will appear (or has already appeared), and in that case, we can look for possible narrative clues and hints that can help us uncover her identity. Also, bear in mind that while I will be exploring the possibility that we can identify Luffy’s biological mother – I am not saying that she will necessarily have any kind of integral role in the plot, merely that she may have been inserted into the story and that we can guess who she is.
It’s already been suggested in the fandom, but I think there is a strong chance that the person we’re looking for is Tritoma.
And I am not saying this because of similar vibe, facial expressions, or anything like that.
And to understand how I came to that conclusion, I need you to ask yourself the simple question of: why in the world did Kuma send Luffy to Amazon Lily? With every other Straw Hat, he sent them to places that were perfectly suited to help them sharpen their skills, learn about the things that interested them and become stronger.
Perhaps Kuma speculated that Hancock would be able to help Luffy rescue Ace from Impel Down, but why in the world would Kuma assume that Hancock would be willing to do that? How could he possibly predict that Hancock would fall in love with him?
And the line of reasoning I had in mind is this: every previous Amazon empress we know had a tendency to fall in love with a great man. Gloriosa fell for Roger. Shakky fell for Rayleigh. If my theory is correct, Tritoma fell for Dragon. If this pattern continued, Hancock would do the same. And if the previous empress (as I speculate) had fallen for Dragon, it is entirely within the realm of reason that Kuma bet his money on Hancock falling in love with Dragon’s son, the boy whom he had been watching over for so long and become endlessly fascinated with.
Then there’s this: we know that Tritoma is deceased, and she died of “love sickness”. It’s possible that she did not merely die because of her love for a lover that she had (which I speculate is Dragon), but also because she was separated from her child, seeing as how men are not permitted to live on Amazon Lily.
You may notice that I made the assumption that Kuma knew the identity of Luffy’s mother. That is, indeed, an assumption, but one that can be defended with reasonable arguments. Consider the fact that not even Ivankov, Dragon’s closest subordinate, had any idea that Dragon had a son. And yet Kuma somehow knew about this. If he knew that Dragon had a child, it is reasonable for us to speculate that he also knew that he had a lover, and who that lover was.
But, you may protest, the Kuja only give birth to females. And this actually goes to support my point, because if Luffy had been the first ever boy to be born of a Kuja, this would go on to emphasize his characteristic uniqueness. Luffy is no ordinary person, and it would make sense if this pattern of doing the extraordinary began at his moment of birth.
One final thing I’ll mention is this (and this is not a thought that is original to me): Oda loves assigning meanings and words to numbers. And Tritoma appears in Chapter 1156. Number 5 is read as “Go” in Japanese. In the ancient Japanese counting system, 6 is read as “Mutsu”, and sometimes simply the shortened version “Mu” is used. Put them together, and you get “Gomu”. This is not the only time Oda has used the number 56 in the story to allude to Luffy’s devil fruit. For example, when the Grand Fleet formed at the end of Dressrosa, the total number of men who swore loyalty to Luffy was exactly 5,600.
None of this is 100% conclusive, but I believe I had a thought or two that was worth sharing. Let me know what you think.