Can Luffy defeat Goku if they were to fight at full power? A fight between Luffy and Goku would have been epic to witness.
Luffy from one piece is a very strong character, and he is also an adaptive fighter. However, for him to go toe to toe with Goku is out of his league.
Why? Well, despite how unique and strong Luffy’s devil fruit powers are in the anime along with his insane strength and durability. Son Goku from dragon ball is still many times stronger than Luffy in all areas.
However, one aspect in which Luffy could have an edge is Haki, since he is only getting more powerful and he has the rarest type.
But we don’t know the full potential of Luffy and how far he can go since his Haki and each level of his Gears vastly empowers him.
Nevertheless, both Goku and Luffy are very much alike in their personalities attitudes,s and morals.
Both Goku and Luffy as a character strive to improve their fighting skills by protecting their close friends.
Also, Goku and Luffy have beaten enemies of great power despite the odds against them, even though Luffy has had more outmatched fights than Goku.
When it comes down to a serious fight, Luffy would go all out and not back down.
One thing is for sure though, the two would have got along well I think, and be eager for a spar.
Luffy’s Transformation – One Piece
Luffy from one piece has many transformations, however, let’s just use Luffy’s current strongest form Gear 4th against Goku’s Super Saiyan 3 form.

Gear 4th Luffy completely destroyed Dolfamingo and whatever was left of Dressrosa.
Additionally, Luffy at the time was a wrecking machine that was not only able to increase his strength, speed and become versatile that he can change the direction of his attacks as he was doing them.
This makes it harder for the enemy to dodge and he was even resistant to Dolflamingo’s Attacks as well.
Luffy’s Gear 4th is undoubtedly powerful, however, his power has limits, for example, to be more clear, it can only last 10 minutes and once the time runs out, not only is Luffy unable to use Haki.
He is also left very weakened and vulnerable to the point that he can barely move.
even after a 10 minutes recovery time, Luffy is still left pretty weak and even his Haki would not be as strong as it should be.
So, this is why Luffy cannot defeat Goku in an anime battle.
Goku Super Saiyan Transformation – Dragon Ball
Let’s used Super Saiyan 3 Goku since god and blue is a whole different level about the character feats.
So, if you are a Goku fan, we all know Super Saiyan 3 Goku is a total monster.
When he was about to fight Majin Buu, just powering up caused tsunamis and earthquakes around the planet.
Also, when Goku first turned Super Saiyan 3, the transformation itself took a while to get into. However, in the battle of Gods, it seems Goku has mastered Super Sayain 3 and was able to transform much quicker.
Super Saiyan 3 Goku literally punched a hole right through King Kai’s planet and the gravity was 10 times heavier than that of Earth.
From what we learn about dragon ball, Super Saiyan 3 is 8x times more powerful than Super Saiyan 2.
Nevertheless, this makes Goku 400 times stronger than his normal base form.
Goku at the time in his SSJ3 form easily outmatched Fat Buu and was capable of going toe to toe with Kid Buu.
However, thanks to Kid Buu’s regeneration he couldn’t. Of course, even if Son Goku wasn’t in his Super Saiyan 3 form, he could still blow up the planet with ease.
So, imagine how easy it would be 400 times stronger than his normal form.
Super Saiyan 3 does take up a lot of energy too, however, when Goku is out of the form he can still transform into a Super Sayain, fight, and still have a lot of strength. So this drawback only is not even close to as bad as Luffy’s in Gear 4th.
I love One Piece and Dragon Ball, however, Goku vs Luffy in any way shape, or form is a squash match. Luffy would not stand a chance against Goku.
Plus we are not even gonna get into Mastered Ultra Instinct Goku.
Goku will win pretty much no matter the outcome unless Goku decided to give up the fight.