One Piece Concepts Explained: Devil Fruits, Haki, Joy Boy

20 concepts, each from the manga itself: what it is, the chapter it is first mentioned in, what canon states and what is still unknown.

Every concept

20 concepts
  1. Devil FruitsDevil Fruits are mysterious fruits in the One Piece manga that grant animal transformations, door-like abilities, and elemental powers like darkness or sand, sometimes erasing personality upon awakening.First mentioned Ch. 1 · 6 canon facts
  2. HakiHaki is a power in the One Piece manga, with Armament Haki as invisible armor to strike Logia users, Observation Haki to sense presence, and Conqueror's Haki to overwhelm foes.First mentioned Ch. 434 · 7 canon facts
  3. The Will of D.The Will of D. is a fated inherited will carried by the Clan of D in the One Piece manga, regarded as the antithesis of the god-like Tenryuubito.First mentioned Ch. 154 · 6 canon facts
  4. Joy BoyJoy Boy is a legendary figure from eight hundred years ago in the One Piece manga who apologized on a poneglyph and was Zunesha's companion before opposing the World Government.First mentioned Ch. 628 · 8 canon facts
  5. Ancient WeaponsAncient Weapons are three immensely powerful weapons named Pluton, Poseidon, and Uranus, capable of mass destruction, in the One Piece manga.First mentioned Ch. 192 · 5 canon facts
  6. PoneglyphsPoneglyphs are indestructible books built by the Kozuki clan in the One Piece manga, recording the Void Century, with four Road Poneglyphs and a uniting Rio Poneglyph.First mentioned Ch. 193 · 6 canon facts
  7. The Void CenturyThe Void Century is the period ending 800 years ago in the One Piece manga that concealed a war involving an advanced civilization and ancient weapons.First mentioned Ch. 301 · 6 canon facts
  8. Laugh TaleLaugh Tale is the final island in the Grand Line in the One Piece manga, named by Roger after he reached it using Road Poneglyphs.First mentioned Ch. 105 · 7 canon facts
  9. Log PoseLog Pose is a navigation device in the One Piece manga that gets re-written at every island, pointing the way toward the next destination.First mentioned Ch. 105 · 8 canon facts
  10. The Five EldersThe Five Elders are the supreme authority of the World Government in the One Piece manga.First mentioned Ch. 233 · 8 canon facts
  11. Vivre CardVivre Card is a paper made from nail clippings in the One Piece manga that points toward its owner, shrinks with lost vitality, and stays intact when wet or burned.First mentioned Ch. 489 · 4 canon facts
  12. The Ancient KingdomThe Ancient Kingdom was a defeated civilization from 900 years ago in the One Piece manga, whose erased history is preserved through the poneglyphs it created.First mentioned Ch. 395 · 4 canon facts
  13. The One Piece TreasureThe One Piece Treasure is Gold Roger's hidden treasure that pirates search for by traveling the Grand Line in the One Piece manga.First mentioned Ch. 2 · 7 canon facts
  14. The Red LineThe Red Line is a massive wall of rock in the One Piece manga that stretches high into the sky and splits the seas into four regions.First mentioned Ch. 22 · 5 canon facts
  15. Buster CallBuster Call is an emergency Marine order in the One Piece manga that summons five lieutenant generals and a fleet of warships to destroy a target, leaving no traces.First mentioned Ch. 359 · 6 canon facts
  16. Celestial DragonsCelestial Dragons are the World Nobles, also called Tenryuubito in the One Piece manga, who own branded slaves and claim to be descendants of the creators.First mentioned Ch. 497 · 8 canon facts
  17. Lineage FactorLineage Factor is the blueprint of life in the One Piece manga, storing recollections and capabilities that can be manipulated for cloning or artificial Devil Fruits.First mentioned Ch. 698 · 6 canon facts
  18. God ValleyGod Valley is an island in the One Piece manga where Garp and Roger defeated the Rocks Pirates before it vanished without a trace.First mentioned Ch. 957 · 6 canon facts
  19. Sun God NikaSun God Nika is a legendary warrior slaves believed in, in the One Piece manga, whose awakening lets Luffy achieve Gear Fifth.First mentioned Ch. 1018 · 6 canon facts
  20. Mother FlameMother Flame is Vegapunk's invention in the One Piece manga, possessing many practical uses, which Imu ordered to be tested on Lulusia Kingdom.First mentioned Ch. 1086 · 4 canon facts