Fire manipulation is an incredible power that has existed in fiction for years upon years. Being one of the coolest abilities out there, it is no surprise that One Piece also features several characters with this power.

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Fire manipulation comes in different forms in One Piece and while some can produce it, others can manipulate it, and some others can become it in the purest form. It goes without saying that the strength of fire manipulation differs from user to user and only a few can master and employ it at the very best level.

8 Oven

One Piece Pound attacked by Oven in One Piece

Charlotte Oven is one of the strongest officers of the Big Mom Pirates and a man worth 300 million berries. He is the user of the Netsu Netsu no Mi and he can heat up his body or anything that he is touching with ease. At the peak of his abilities, he can also set things on fire.

While Oven can use flames, his control over them is rather limited. Furthermore, the hotness of the flames he produces is likely not that great compared to the others. Nonetheless, he is a skilled fighter and a veteran of the Big Mom Pirates.

7 King

King, Kaido's Right-Hand Man Making His Debut In Wano

King is an exceptionally strong flame user as well. He is a Lunarian and, as shown in Wano, they have the ability to manipulate fire at will. King can use flames all over his body and even conjure them and hurl them at his enemies.

At their strongest, his flames take on the appearance of magma and can burn very hot. Against Zoro, however, it didn't seem to be all that effective. Nonetheless, King is a very good flame user and, likely to be one of the very best in One Piece.

6 Portgas D. Ace

Portgas D. Ace From One Piece

Portgas D. Ace was the brother of Monkey D. Luffy and was introduced to the fans during the Alabasta Saga. There, it was revealed to everyone that Ace was a user of the Mera Mera no Mi. This Devil Fruit is incredibly powerful and allowed Ace to become fire itself, thanks to its Logia nature.

With its powers, Ace was able to become fire itself, as well as manipulated and produce it according to his will. He could set a fleet of ships on fire or burn down a town with rather ease. Ace's fire was such that even skilled users of Haki could not resist it and that just goes to show how incredibly hot his flames were.

5 Marco

Marco

Marco is a very powerful pirate and the former right-hand man of Whitebeard himself. He uses flames that are very different from all the other types seen in One Piece. He possesses the Blue Flames of Resurrection and these flames work in a different manner when compared to any other flame.

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They possess healing properties and, although they consume stamina, they can let Marco recover from any damage that he takes. Marco's flames also have a superiority over regular flames, as seen when he clashed briefly against Big Mom. He is a great flame user, even though his flames are slightly different.

4 Sabo

Sabo attacks Burgess in Dressrosa

Sabo is also a powerful flame user and is likely stronger than his brother, Ace. He is the Chief of Staff of the Revolutionary Army and the number two of Monkey D. Dragon. Known around the world as the Flame Emperor, Sabo is the current user of the Mera Mera no Mi. This Devil Fruit was formerly Ace's and, after his death, it came into the possession of Doflamingo.

In the Dressrosa arc, Sabo consumed it and, currently, he is mastering its abilities. His usage of this power is certainly not as refined as that of Ace yet, which makes Ace a better flame user than him, however, overall, Sabo is definitely stronger at the moment.

3 Sanji

Sanji Ifrit jambe attack

Sanji is an exceptionally skilled flame user as well. His flame powers come from the genetic alterations that were made to him before he was born. Sanji was born with an incredible resistance to heat and, later, this resistance developed into the ability to manifest fire on his legs.

After his genetic modifications awakened completely, Sanji could manifest blue flames, which are known to burn even hotter than regular flames. This means that the flames that Sanji possesses are hotter than the ones possessed by the users of the Mera Mera no Mi. In terms of pure firepower, he is likely the strongest flame user in One Piece.

2 Big Mom

Big Mom One Piece

Big Mom is an extremely powerful pirate and a former Yonko of the sea. She possesses the powers of the Soru Soru no Mi, which is a powerful Paramecia type of Devil Fruit using which she can manipulate souls at will.

Big Mom has given a piece of her soul to fire itself and created a sun homie named Prometheus.

Using Prometheus, she can manipulate fire at will. At its strongest, Prometheus cannot even be put out by water. Furthermore, Big Mom can also produce a substance similar to magma, and she shares this in common with Kaido. Her ability to burn enemies is very impressive, however, Law dealt with it with rather ease.

1 Kaido

One Piece - Kaido in his dragon form

Kaido is an exceptionally powerful flame user as well. Thanks to his Devil Fruit, Kaido can spit fire and it is strong enough to vaporize entire mountains within a matter of seconds. In his strongest form, named Kaen Hakke, can cover his body in magma which is hot enough to melt entire islands.

This ability of Kaido was known to be his strongest and it was used against Luffy's Gear 5. Although it burned Luffy to quite a great degree, it was not powerful enough to overcome him.

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