Blackbeard may be Luffy's polar opposite in many regards, but they share a common theme during their fight scenes.
According to his arch-enemy, Blackbeard, it's too soon for Luffy to become a new Yonko. He and the others are heading straight toward Wano Country to face Kaido and his Beast Pirates.
They are the exact opposites of each other and that is why most believe Blackbeard will be Luffy's final fight: Luffy is skinny, BB is fat; Luffy has an average paramecia type devil fruit, BB has the strongest logia; Blackbeard becomes a Yonko and settles on an island with his crew, Luffy keeps moving around looking ...
Luffy can't be hurt by blunt attacks but can be cut. Buggy can't be cut but can be hurt by blunt attacks.
Luffy strongly dislikes the Blackbeard Pirates, especially their Admiral Blackbeard. He puts a lot of blame on Blackbeard for his role in Ace's death, having captured him and handed him over to the World Government and has fought against Blackbeard directly, whilst in Impel Down, due to what he did.
At least two have fallen in love with him, Alvida and Hancock, whilst another two have become enamoured with him, Rebecca and Shirahoshi. Nami, Robin and Vivi all share close and deep bonds with Luffy and have become some of his closest friends.
That said, there is one crew member who stands above the rest in terms of loyalty to Luffy: Roronoa Zoro. The Straw Pirates' first mate has proven his loyalty on numerous occasions throughout the series, even putting his crew mates' well-being above his own life.
Nami and Usopp are the two strawhats Luffy has the closest relationship with. This isn't disregarding the other strawhats as not being close, rather this is more like the two Characters Luffy is always seen around.
Monkey D. Luffy is supposed to be in a three-way rivalry with Eustass Kid and Trafalgar Law, but it comes off more lopsided than it's supposed to. The following contains spoilers for One Piece Chapter 1076, "Old Friends," by Eiichiro Oda, Stephen Paul, and Vanessa Satone, available in English from Viz Media.
The Bara Bara no Mi can be considered the opposite of the Gomu Gomu no Mi. While Luffy is immune to blunt attacks (unless imbued with Busoshoku Haki in Luffy's case), Buggy is immune to slicing attacks.
Black beard cannot transform completely into darkness, he can only create and project it (as all Logia users can). But his body can be hit normally without haki, as Luffy hit black beard in Impel down. This is because in all situations there is light shining on him,which is natural inhibitor of darkness!
Possessing two Devil Fruits is normally impossible, and the exact mechanism for how Blackbeard achieved this feat is unknown. Typically, the Devil's spirit inhabiting the body of a Devil Fruit user will not allow another one in, killing the user.
While many theorize that Luffy's Awakening will be specifically tailored to defeating Blackbeard, this has yet to happen in One Piece and thus is still speculative. Even with Advanced Conqueror's Haki, it's likely Luffy doesn't yet have the tools needed to defeat Blackbeard in a fight.
While One Piece has many superb side characters, Big News Morgans just proved why he is the best of them by betraying Luffy and his crew. This may not seem like an action that would endear Morgans to One Piece's fans, but his reasons for doing this give him a delightful layer of complexity.
Nami was one of the first characters to join the Straw Hat Pirates, and remains an extremely important character to the story. When it comes to strength, she's the weakest member of the crew, which is why she often relies on clever tricks and strategies in battle.
1 Luffy's Rival: Blackbeard
Blackbeard is Luffy's greatest rival and nemesis in the quest to find the One Piece.
Kaido is one of the best fights that fans have seen in One Piece over the years, if not the best. The fight is, undoubtedly, the most difficult one that Luffy has fought so far. Kaido managed to defeat Luffy three times. For the first time, Luffy faced defeat against him Kuri and was thrown in prison.
Shimotsuki Kuina was a childhood friend, relative and rival of Roronoa Zoro. She was the daughter of Shimotsuki Koushirou and a descendant of Wano Country's famed Shimotsuki Family. Her death at the age of eleven drove much of Zoro's ambitions as a swordsman, including his development of the Three Sword Style.
9 Usopp & Nami Are The Coward Duo Of The Straw Hat Pirates
Since they're so similar, Usopp and Nami relate to each other's struggles and have formed quite a beautiful bond.
Kuina is the greatest influence in Zoro's life. Kuina was Zoro's childhood rival and friend. She was a skilled swordsman and shared the same goal as Zoro of becoming the world's greatest swordsman. Kuina envied Zoro for his masculinity, but Zoro dismissed her beliefs.
Nami and Usopp are the two strawhats Luffy has the closest relationship with. This isn't disregarding the other strawhats as not being close, rather this is more like the two Characters Luffy is always seen around.
Nami gets along best with Robin, though initially was one of the ones who distrusted Robin the most alongside with Zoro, but a purse full of Robin's jewels quickly changed Nami's mind.
Zoro trusts Luffy implicitly and always follows his decisions whatever the consequences, acknowledging it as a captain's decision, which a crew must carry out without question. When Zoro first joined Luffy, he made it clear that he would turn on or even kill his captain if he ever stepped between him and his dream.
To the present day, One Piece author Eiichiro Oda has never given a clear indication of the relationship between Luffy and Nami being a love story. However, there have been several instances where it seems that the author hinted at Nami having some romantic feelings towards Luffy.