Theories & Speculations

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  1. One Piece (Series & Plot) 1,257
  2. Characters 2,251

Top Theories/Speculations

  1. Theory Ancient Weapons: Astronomy, The real source
    Moons of Pluto, Uranus and Neptune are the inspiration for Ancient Weapons - by CAMUNAI
    Updated: Aug 31, 2017
  2. Theory Sanji's Hidden "Cosmic" Power
    An old SBS may hold a clue to Sanji's true power. - by Theo Ries
    Updated: Oct 10, 2016
  3. Theory Luffy's Awakening 3 :Haoshoku Haki
    The return of True King : Applications of Conquer's Haki - by Dave
    Updated: Mar 7, 2017
  4. Theory Journey to Uranus :Winged Race
    4th Ancient Weapon -Devil fruits origins & Secret of Yami Yami no mi - by Dave
    Updated: Mar 28, 2017
  5. Theory Chopper's Dream
    Chopper's Road to becoming Panacea - by Dave
    Updated: Aug 19, 2016

View All Featured Theories & Speculations

  1. Theory Barbarossa and Shanks The Emperors

    The commonality between Emperor Barbarossa and Emperor Shanks.
  2. Theory The ultimate Nico Robin theory! - To Wano, the well of the Poneglyphs! (UPDATED 02.03.2019!)

    Some analysis on our favourite-swan Robin! Everything might lead up to Wano+! Analyzing the threats!
  3. Theory Zoro’s Past: The Abandoned Hippo

    Connecting Zoro to a new hidden society in Wano
  4. Speculation Van Augur - Special Haki Ability

    Van Augurs name implies his advanced observation haki
  1. Aloe Vera

    Theory Flowing Armament Haki - The Way of the Sword

    Taking an in-depth look at the relationship between Flowing Armament Haki and swordsmanship. (945+)
    4.66667/5, 6 ratings
  2. GangMemberLeo
    2.6/5, 5 ratings
  3. Zach Mathis
    4.5/5, 2 ratings
    Updated:
    Jun 10, 2019
  4. ImmaIvanoM

    Speculation Kyoshiro’s Devil fruit ability

    Kyoshiro probably has a Zoan DF from the trajectory of the major antagonists of the arc
    4.66667/5, 3 ratings
    Updated:
    Jun 9, 2019
  5. flappy

    Theory Little Garden and Wano

    Oda uses little Garden to show us what's coming
    4/5, 4 ratings
    Updated:
    Jun 8, 2019
  6. MammothBoy78

    Theory Strawhat theory

    Theory about how the will of D is passed down from strawhat
    4.75/5, 4 ratings
    Updated:
    Jun 5, 2019
  7. Lily
    5/5, 1 rating
    Updated:
    Jun 5, 2019
  8. MammothBoy78

    Theory The end of Kaido and the Wano Arc

    Why Kaido is a homie and how Gecko Moria is gonna help blackbeard kill and steal Kaido's devil fruit
    3.25/5, 4 ratings
    Updated:
    Jun 3, 2019
  9. ChuckTalens
    3/5, 1 rating
    Updated:
    Jun 2, 2019
  10. Artur

    Theory Denjirou's True Identity

    Trying to prove Denjirou's true identity, who might've been hiding under our noses this whole time!
    4.2/5, 5 ratings
    Updated:
    Jun 2, 2019
  11. Donal D. Trump

    Theory Dragon's secret

    Let's explore the 15+ year old mystery of Monkey D Dragon's tattoo
    5/5, 4 ratings
    Updated:
    Jun 1, 2019
  12. DrPsycho
    1.66667/5, 3 ratings
    Updated:
    Jun 1, 2019
  13. Haylash
    3/5, 1 rating
    Updated:
    Jun 1, 2019
  14. Marco One Piece Theorist
    4.25/5, 4 ratings
    Updated:
    May 31, 2019
  15. Ashurockerz

    Speculation Orochi is blackmailing Killer

    I think that Orochi is blackmailing Killer because of the 'Smile' fruit
    2.5/5, 2 ratings
    Updated:
    May 31, 2019
  16. Masasoite
    4.8/5, 5 ratings
    Updated:
    May 31, 2019
  17. Gawnfall
    1/5, 3 ratings
    Updated:
    May 30, 2019
  18. aptop6

    Theory Creating "One Piece"

    Is it possible to manually create "One Piece"...??
    1/5, 1 rating
    Updated:
    May 29, 2019
  19. Seventy
    3.33333/5, 3 ratings
    Updated:
    May 29, 2019
  20. Seventy
    0/5, 0 ratings
    Updated:
    May 28, 2019
  21. Seventy
    4.6/5, 5 ratings
    Updated:
    May 27, 2019
  22. Critical Mindset
    2.6/5, 10 ratings
    Updated:
    May 27, 2019
  23. Gomuboy
    3/5, 2 ratings
    Updated:
    May 27, 2019
  24. Donal D. Trump

    Theory Ace's path: SAD & SMILE

    Today we are uncovering Ace's purpose and speculate where his "path" will end
    4.85714/5, 7 ratings
    Updated:
    May 25, 2019
  25. SaltandPepperMix
    4.33333/5, 3 ratings
    Updated:
    May 25, 2019
  26. RevolutionaryOfThe6Paths
    5/5, 5 ratings
    Updated:
    May 24, 2019
  27. aptop6
    3.8/5, 5 ratings
    Updated:
    May 24, 2019
  28. Xatch

    Speculation SMILE!! Your On Candid Camera

    SMILES; Their effects, and impact on the story
    2/5, 2 ratings
    Updated:
    May 24, 2019
  29. Rej
    4.25/5, 4 ratings
    Updated:
    May 22, 2019
  30. Critical Mindset
    3.5/5, 2 ratings
    Updated:
    May 19, 2019
  31. TheFrenchNewbie
    0/5, 0 ratings
    Updated:
    May 19, 2019
  32. Critical Mindset

    Speculation Queen the plague: a rove beetle zoan? Short speculation. Chapter 943+

    A short speculation on the possibility that Queen might be a rove beetle Zoan (of all things)
    5/5, 2 ratings
    Updated:
    May 17, 2019
  33. ODACCHI
    4.78571/5, 14 ratings
    Updated:
    May 16, 2019
  34. Donal D. Trump

    Theory The world of One Piece

    We are exploring the mysteries of the Grand Line
    4.33333/5, 6 ratings
    Updated:
    May 16, 2019
  35. HisashiGojira
    1.33333/5, 3 ratings
    Updated:
    May 16, 2019
  36. Critical Mindset

    Speculation The florian triangle is going to be important to the end game of One Piece

    Did Oda make use of a colour spread to foreshadow the importance of this mysterious location?
    4.6/5, 5 ratings
    Updated:
    May 15, 2019
  37. TheFrenchNewbie

    Theory SMILE, emotions, a DF user

    Who is taking the emotions, and the importance towards the current plot
    3/5, 2 ratings
    Updated:
    May 14, 2019
  38. Yasu
    4/5, 2 ratings
    Updated:
    May 13, 2019
  39. Rej
    3.33333/5, 6 ratings
    Updated:
    May 13, 2019
  40. Critical Mindset

    Speculation Greenbull is a Birkan: a new admiral theme related to Ancient Kingdom.

    A new idea on where Breenbull might be from that's just food for thought and interesting if true
    5/5, 2 ratings
    Updated:
    May 12, 2019
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