Shaka and Lucci are twin-like counterparts and actually related by blood. Lucci may even be related to Vegapunk (-but this is as of yet still a little vague and not entirely prooven):
First, their posture is the same with their hands always shoved into their pockets:
Both are following their dreams and are even ready to sacrafice something for it (Lucci = Robin, Shaka = all Satellites):
Both are tacticians and therefore being often asked by their colleagues, what the best approach for a situation is:
Also, while Shka's name refers to Buddha Shaka Nyorai, who can be seen as the personification of all that is `good´. Lucci's name has to mirror Shaka's as well in that regard, if both were depitced as euqal twins. And it actually does mirror the other quite well, as Lucci can be seen as a short form for `Lucifer´, the personification of `evil´.
Oda is utmost consistent with both characters and this lets no doubt that Shaka and Lucci are brother-like counterparts.
The best part is: Vegapunk and Lucci are sharing the same way of thinking, as well. Vegapunks dream is for peace to reign over all countries of the world and prevent wars from happening with his inventions and findings, he is producing. On the cover story with Ceasar this is getting clear as the story dives into MADS, which was founded as the “Laboratory of Peace”, with its head inventor being Vegapunk, who made several inventions such as the weapon, which transformed bullets into flowers, or cloning someone. After Stussy was cloned, he even said that “[…] that is a huge step towards world peace!!”. Oda also named chapter 1068 “A Genuis’ dream” and even the entire volume 106 after said chapter, which underlines its importance to the story and the fact that the thematic of Egghead is, in fact “Peace”.
The only thing that stands out is the fact that Vegapunk disregards Jinbe’s concern about one of his inventions as `stuff he should not worry about´. That means Vegapunk is ready to make some `small´ sacrifices if it means that he can reach his own greater goal/dream (chapter 1067).
This is also a reoccurring theme with Lucci, who was once depicted as a small child with an olive-branch (symbol of peace) in his hand, his white pet pigeon Hatori (symbol of peace) next to him and the word “peace” (reference to peace) written on his shirt. Those are three things, which are all referring to the theme of the Egghead arc.
And during the story of Water 7, Lucci even commented on Iceberg, who refused to give the WG the location of the blueprints with: “Yet you would dare to stand in our way? Even now, people over the world being victimized by pirates … and you’re saying you wont help them?”
This tells us how Lucci is thinking. He himself finds it not good that Iceberg refuses to help the people, who are being victimized by pirates. It also shows us what is driving him. Helping people over the world be freed of the pirates, he considers as being all bad.
And now the cool part: Lucci also regards sacrifices as something you have to do, if you want to reach your goal (in his case world peace), just like Vegapunk. Because, he was ready to sacrifice Robin for the greater good of making pirates stop victimizing people. On the Puffing Tom, he even comments on her being born under an unlucky star. Meaning: He thought it was bad that he had to sacrifice Robin, but he needed to do it to acquire world peace.
In their thinking Vegapunk and Lucci have the same goal and approach it in the same way! Both – Lucci more than Vegapunk - need to realize that you do not have to make sacrifices to reach your goal.
Kizaru's and Luffy's fight is not over, because we have not reached the peak of the arc, yet. And Zoro and Lucci are not fighing at full strength, because Lucci is not Zoro's main fight, as the assassin is actually on the side of the SHPs.
And if you are saying that: No, he wanted to kill Vegapunk a few chapters prior and ratted the SHPs out to the marines, than let me tell you one thing:
The WG wants 3 things safe and sound in their hands:
- Punk Records
- York and
- Mother Flame
If you kill Vegapunk, his brain dies with him. So, while the Satellites have to all die according to the WG, they need the Stellar alive and cannot harm him. This is why Stussy protected him with her body. Because she is working for the WG. Yes, she is working with the enemy. She is the reason, why there are 30,000 marines currently surrounding Egghead. It was her, who let Akainu be informed about the SHP being on Egghead. She could have refrained from informing him and still being able to remain undercover. But no, she made it worse for her clone-father Vegapunk's this way. She also followed Akainu's order for Lucci. Because as the admiral wanted them not to confront any of the SHPs on Egghead, she made sure to make Kaku and Lucci sleep, while both were not following orders properly from the beginning of the arc.
Oh, did I mention that we had Lucci question his order to kill Vegapunk, given him by the WG just as the arc began? Look at chapter 1062. This is one of many hints pointing towards his relationship with him and Shaka. I would not wonder, if Lucci is actually Vegapunk's 7th satellite.
If you want more and are interested, I have so many hints and little bumbs I can point out to you, I currently drown in it. I could write a novel just by listing them. But I hope you had fun reading it.
See you.