Luffy's Gear 5 is his strongest asset in One Piece, which is powerful enough to overpower the King of Beasts, Kaido. Although Luffy calls it Gear 5, it is actually the awakened state of his devil fruit.
Luffy's greatest power-up to date is, undoubtedly, Conqueror's Haki coating. During his fight against Kaido, Luffy observed Kaido coating his weapon in Conqueror's Haki. After this realization hit him, he was able to use a crude version of this technique himself and could coat his fists in Conqueror's Haki.
Is Luffy Gear 5 the strongest? Yes! Of course, Luffy's Gear 5 is the peak of his colossal powers. He can literally do ANYTHING with his devil fruit powers right now, as he transforms into the Sun God Nika when using Gear 5, making his devil fruit the strongest in existence so far.
Gear 10th Luffy is Luffy's ultimate form from the upcoming speculative fan-made sequel to One Piece, Son of the Pirate King. Luffy has continuously trained his haki and Devil Fruit powers during his time as Pirate King until he achieved this gear.
While using Gear 5th, Luffy is able to extend his elasticity to inanimate objects. Luffy's devil fruit awakening allowed him to beat Kaido, who was considered the "Strongest Creature in the World." In his Gear 5th form, there are not many One Piece characters who can defeat him.
The concept of power up Gears has been a core part of the One Piece franchise and allowed Luffy to take on the most difficult of foes. Fans speculate Gear 6 is inevitable – and with the series winding up to its conclusion, it could play a pivotal part in the final conflict.
Gear Five gives Luffy the ability to fight freely and without much constraint as shown in his bout with Kaido and now Rob Lucci. This means Luffy can be hit with deadly attacks that now leads to his physical appearance forming either a shape of the weapon, or showcases the manner in which he was hit.
He can use it anytime.
With gear 5 Luffy can also fly, he can change his shape willingly which also means in terms of physical strength he can take it even further by entering his giant mode, he can turn basically anything to rubber and use it to his advantage like lightning or his opponent (I know people don't think this power is that great ...
No. Luffy can't defeat Goku.
In terms of strength, Luffy is already at the level of the Yonko. While he may not have awakened his Devil Fruit, he's taken his Haki to the level of the Yonko, being able to use the advanced form of all three Haki types, which is something that no other Yonko can do at the moment.
Against Shanks, even if Luffy possesses weaker Haki, the Devil Fruit abilities of the Hito Hito no Mi, Model: Nika can make up for the deficit and see him emerge victorious. Currently, however, Shanks is likely stronger than Luffy, simply due to the fact that the plot demands that of him.
Technically speaking, Luffy doesn't have a gear technique called Gear 1. There is no mention of Gear 1 throughout the anime and manga. Thus, Luffy's base form, the usual rubbery body that he used in early episodes of the anime, can be considered “Gear 1.”
Over the course of years, Luffy has been able to train and develop his skills which has allowed him to create his Gears which are basically special techniques that are related to his devil fruit. Luffy has a total of 6 gears (Three being subforms of Gear 4) and are divided into four levels.
The more he laughed, the better he seemed to fight. Throughout the clash against Kaido, fans could see him laughing even though he was fighting a high-intensity battle, which just goes to show how important it is to his character.
1) Kaido. Kaido did in fact lose to Luffy's Gear 5 at the end of the Wano Country arc. However, keep in mind that he withstood multiple waves of strong enemies before this final encounter. Luffy was also completely worn out after the fight and fell into a coma for about a week.
So, for you manga-readers: yes, Gear Five is in Red.
In addition, Luffy still has his standard weakness to cutting attacks.
While the effects of this technique have been mitigated in post-time-skip One Piece thanks to training, the prior uses have already caused irreversible damage to his body. Luffy dies from gear 5th strain on his heart and law gives up his life so they can win. This causes Luffy to go into gears without dying.
In conclusion, the revelation that One Piece's Luffy can manipulate reality thanks to Gear Fifth and his Gomu Gomu no Mi awakening is a game-changer for the series and has massive ramifications for the future of One Piece.
With its powers, Luffy was able to topple even Kaido and if he could defeat the man who was the Strongest Creature Alive, he can certainly defeat Shanks as well.
No. Luffy can't defeat Goku.
According to Silvers Rayleigh, this is a very clever way to deal with enemies and it also enables Luffy to fly, which is yet another advantage that Gear 4 offers.