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For other models of this fruit, see Ryu Ryu no Mi (Disambiguation).

The Ryu Ryu no Mi, Model: Pteranodon is an Ancient Zoan-type Devil Fruit that allows the user to transform into a pteranodon hybrid and a full pteranodon at will. It was eaten by King.[1]


  • Ryū (?) is Japanese for "dragon" and contained in the Japanese word for "pterosaur", yokuryū (翼竜?).

Strengths and Weaknesses

A user of this fruit's power can turn into a pteranodon: a large and powerful, flight-capable reptile from prehistory. Once transformed, they become able to fly at tremendous speed, covering large distances in a short time, and gain a significant boost to their overall physical abilities, as expectable of a predatory Ancient Zoan. Additionally, the full Beast Form as displayed by King is notably big, several times larger than an average-sized human (though it is worth noting that King is already much larger than normal people in his Human Form).[1][2]

King diving down with Sanji stuck to his beak.

The combination of great (flight) speed, strength, and size conferred by the transformation permits the user to violently push back and cause notable damage to whatever they fly into headfirst, be it a person or massive structure, such as a large ship. The user's pteranodon beak is long, sturdy, and an effective pointed weapon, allowing King to affix himself to smaller targets and then divebomb into structures in order to tear them apart.[1][2]

No weaknesses are known of this ability beside those that are standard for Devil Fruits.


King repelling a massive ship.

Like his fellow Zoan-using Beasts Pirates' officers, King uses his ability primarily for physical combat, especially in the air, and his ability to fly, naturally, is highly advantageous for travel.[1]

In his full pteranodon form, King is able to fly into objects with immense speed and force, potentially damaging them greatly in the process. When flying into the Queen Mama Chanter, such midair collision (with a flaming kick in the anime) knocked the enormous ship back with enough force to throw off Big Mom herself.[1] Later, King was shown to present a danger to a Raid Suit-wearing Sanji by diving into him with his strong, sharp-pointed beak, challenging said suit's defenses to the point that King claimed he would split his foe in half upon impact (something he ultimately failed at due to the suit proving too durable).[2][3]

Otherwise, as a lunarian, King can combine his transformation with his ability to produce fire; he has been seen attacking with multiple fiery projectiles shot from his wings, almost resembling a fighter aircraft.[4]

When he is in his Human-Beast Form, King is able to use his pteranodon wing-arms like swords, allowing him to release powerful air blades by swinging them. These slash attacks can deal massive damage to whatever they hit, and he can launch them in rapid succession.[5] His wing blades are also strong enough to clash with and even overpower Meito being wielded by a master swordsman.[6]


  • Tankyudon (丹弓皇タンキュウドン Tankyūdon?, meaning "Vermilion​ Bow Emperor"): A melee attack where King flies toward his opponent in his Human-Beast Form, then hits them with a sweeping strike of one of his wings. When used against Roronoa Zoro, the attack overpowered the latter's Ul-Tora Gari technique before blowing the swordsman back with tremendous force, making him bust right through the Skull Dome's outer wall.[6] In the Viz translation, the technique is called Imperial Archer.


  • King possessing this fruit's ability and his "Conflagration" epithet evokes a resemblance to the kaiju Fire Rodan, a pteranodon residing in a volcano, which is among the major reoccurring kaiju in the Godzilla franchise.
  • This is the second Ancient Zoan fruit revealed that is not based on a dinosaur, after the Zou Zou no Mi, Model: Mammoth, although unlike the latter, it still falls under the Ryu Ryu no Mi series.
    • Despite not being dinosaurs, pterosaurs are still close cousins to them. The two families are part of the "Avemetatarsalia" clade from which only three families are known to have descended.


  1. 1.0 1.1 1.2 1.3 1.4 1.5 One Piece Manga and Anime — Vol. 92 Chapter 930 and Episode 924, The fruit's power is first displayed.
  2. 2.0 2.1 2.2 One Piece Manga — Vol. 98 Chapter 988 (p. 10).
  3. One Piece Manga — Vol. 98 Chapter 989 (p. 15).
  4. One Piece Manga — Vol. 100 Chapter 1005 (p. 7).
  5. One Piece Manga — Chapter 1027 (p. 12).
  6. 6.0 6.1 One Piece Manga — Chapter 1027 (p. 15-16), King uses Tankyudon against Zoro.

External links

  • Pteranodon – Wikipedia article about pteranodons.

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