Devil Fruits are the cornerstone of the power system One Piece. Introduced at the beginning of the story, these Devil Fruits were shown to have mystical powers that they bestow on their eaters, and in return they take their ability to swim. Devil Fruits offer a range of abilities, and there is no power imaginable that they cannot provide. This is simply due to the fact that Devil Fruits actually originate from people's imaginations and exist as an alternate kind of evolution, as confirmed by Vegapunk himself.
While all Devil Fruits are strong in their own ways, there are some that can be considered too powerful. In fact, there are quite a few Devil Fruits that can actually kill anyone in a single shot, and these are believed to be on a whole other level of power.
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Mero Mero no Mi
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Type: Paramecia
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User: Boa Hancock
Mero Mero no Mi is an incredible Devil Fruit used by Boa Hancock, the Pirate Empress. This Devil Fruit allows Hancock to petrify anyone who stands in her way, especially those who are attracted to her. That said, this Devil Fruit is not limited to attraction, as it can even petrify inanimate objects.
Mero Mero no Mi simply needs a single touch of the user to petrify someone. If hit with Mero Mero Mellow, the user can instantly turn their target to stone. Only Hancock can undo this petrification process, and this power is so strong that even Teach, a Yonko of the Sea, feared it and could not undo it.
9
Magu Magu no Mi
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Type: Lodge
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User: Sakazuki
Magu Magu no Mi is a Logia-type Devil Fruit eaten by the new Fleet Admiral Sakazuki. This fruit is one of the most overpowered and is believed to have offensive power of the highest order. This Devil Fruit allows him to transform into, as well as create and manipulate magma at will. As such, this Devil Fruit can simply flood anyone in magma and kill them in a single shot. In the fight against Ace, Akainu showed that he is strong enough to kill in one clean hit.
8
Goro Goro no Mi
Goro Goro no Mi is one of the few Devil Fruits known to be invincible. This is an incredible power belonging to the Logia class that was eaten by Enel at some point. Of course, due to being a Logia ability, the user can transform into, as well as produce and manipulate lightning at will.
Goro Goro no Mi has enough power to destroy an entire island without even awakening the fruit. This fruit can easily kill the vast majority of characters in One Piece in a single shot, which is what makes it a really dangerous ability.
7
Documentary Documentary no Mi
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Type: Paramecia
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User: Magellan
Doku Doku no Mi, eaten by the former Warden of Impel Down, Magellan, is a very powerful Devil Fruit that allows him to manipulate poisons, and this Devil Fruit is incredibly powerful, as it gives him control over millions of types of poisons that he can easily control at will.
This fruit stands as an incredible ability and one that is deadly. It could have killed Luffy in a single shot back in the Impel Down Arc, and it could have even taken down the entire Blackbeard crew in a single shot if they didn't get an antidote.
6
Ope Ope no Mi
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Type: Paramecia
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User: Trafalgar Law, unknown doctor from the void
Used by the Surgeon of Death, Trafalgar Law, Ope Ope no Mi is one of the most overpowered abilities in the world of One Piece. This fruit gives Law the ability to operate on anyone in the RUMs he can create with the power it provides.
Basically, everything in his ROOM is like a patient on his operating table, and he can even manipulate the entire terrain at will. Law possesses immense strength in his RUMs, and now that he has awakened his Devil Fruit, it can certainly kill in one hit, with powerful abilities such as Puncture Wille.
One Piece officially unveils a new Devil Fruit from Hell
A new Devil Fruit straight from Hell has been officially revealed in One Piece's latest release of the Elbaf arc.
5
Gasu Gasu no Mi
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Type: Lodge
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User: Caesar Clown
Gasu Gasu no Mi is a powerful Logia that was introduced to fans in the Punk Hazard Arc, through its user, Caesar Clown. This ability allowed Caesar to transform into, as well as produce and manipulate gases at will.
Caesar had the ability to remove oxygen from small spaces. Under a better user, this fruit can be deadly. It can surely kill anyone in one shot by removing oxygen, and that alone makes it one of the most dangerous powers out there.
4
Soru Soru no Mi
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Type: Paramecia
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User: Formerly Yonko Big Mom
Devoured by the former Emperor of the Sea, Big Mom, Soru Soru no Mi is one of the most dangerous abilities introduced by Oda in One Piece. This Devil Fruit allows the user to manipulate souls however they wish. It is an incredible ability with which the user can drain the soul, or in some cases, the partial life of an enemy in a single shot.
It can kill those who don't have much left to live. However, depending on Big Mom, some can survive this ability. Of course, this ability only works if the target fears the user. However, given that Big Mom wields this ability, the vast majority of people in the One Piece world actually fear her. In addition, this Devil Fruit also has other abilities that give Big Mom enough power to kill almost anyone in one shot.
3
Gura Gura no Mi
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Type: Paramecia
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User: Blackbeard, Whitebeard (former)
Known to be the strongest Paramecia type of Devil Fruit, Gura Gura no Mi allows the user to produce vibrations. As such, these vibrations can be channeled through the ground, air, or any other medium, making the user of the vibration human.
This Devil Fruit is used to create powerful earthquakes or even trigger tsunamis. It is so dangerous that it is known to have the power to destroy the entire world, which is something that can actually be held comparable to the ancient weapons themselves. Quite simply, one can see why this Devil Fruit can kill anyone in one shot.
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Ryu Ryu no Mi, Model: Nidhoggr
Ryu Ryu no Mi, Model: Nidhoggr, is a powerful mythical Zoan Devil Fruit wielded by the Cursed Prince of Elbaf, Loki. This devil fruit is considered legendary and was passed down in the royal family of Elbaf for generations, until 14 years ago, when Loki ate it.
The powers of this Devil Fruit are such that it allows Loki to transform into the largest dragon in the world, called Nidhoggr, which can produce lightning. The lightning powers it offers can allow the user to destroy the entire world. With abilities like Thorheim, the user can basically kill practically anyone in one shot, and with repeated use, even countries can be completely destroyed.
1
Akuma no Mi
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Type: Unknown
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User: Nerona Imu
Was officially introduced in One Piece Chapter 1179, Akuma no Mi is a unique Devil Fruit. With no known classification, this Devil Fruit is among the strongest in the entire world, as it allows its user, Nerona Imu, to transform into the Devil God of the One Piece world.
Using powers like demonic contracts, it can turn anyone into demonic slaves, and it also allows the manipulation of a unique ability called Omen or Maki. The firepower of this omen is such that the vast majority can die in a single hit, and its powers simply cannot be matched.
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