Theories & Speculations

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  1. One Piece (Series & Plot) 1,093
  2. Characters 1,966

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 Who Are They Anyway?
    Let's peek inside - by Shu
    Updated: Apr 17, 2017
  3. 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
  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 Luffy's Awakening 3 :Haoshoku Haki
    The return of True King : Applications of Conquer's Haki - by Dave
    Updated: Mar 7, 2017

View All Featured Theories & Speculations

  1. Theory MARY GEOISE, PANGAEA CASTLE AND THE LOST ANCIENT KINGDOM

    World need to be balance and Light need to be estinguished..
  2. Theory The Ancient Kingdom,the World Government and the Will of D. and how it is connected.

    Light Political Thoughts of the World Government and the Connection to the Will of D.
  3. Theory Im vs Alabasta - The 4 biggest threats to the World Government!

    Hope needs to be extinguished, Vivi is representing it. What could happen the next?
  4. Theory IS IM-SAMA THE NATIONAL TREASURE?

    Im-sama might just be what Doffy was talking about...
  1. Su Long Bepo

    Speculation 13 Reasons Why Shiki Could Actually Be The Shogun of Wano

    Many possible insights using new clues that seem to be overlooked. Lots of possible hints from Oda..
    2.5/5, 2 ratings
  2. Su Long Bepo

    Theory Devil Fruit Reincarnation And How Blackbeard Figured It Out

    Got a lot of solid evidence for this theory, read it all the way through. Enjoy!
    4.8/5, 5 ratings
  3. DarkMage_Kaizoku
    4.66667/5, 3 ratings
  4. BKumafangirl67
    1/5, 1 rating
  5. Enel One Piece Theorist
    1.4/5, 5 ratings
  6. BlazinKicks
    1/5, 1 rating
  7. KayabaJ

    Speculation Is Robin a D. ?

    How can D. die and who is Robin's father
    2/5, 1 rating
  8. TheHeroOfSyrupVillage1030
    3/5, 2 ratings
  9. Donal D. Trump

    Theory Let's reveal what the One Piece is once and for all!

    You know the answer already because you noticed it before but didn't put all puzzle pieces together!
    3/5, 3 ratings
  10. ImmaIvanoM

    Theory Another form of Advanced Observation Haki currently only possessed by Mihawk

    Originally Mihawk’s Epithet was supposed to be “Clairvoyant” but Oda settles for “Hawkeyes”. Why?
    4.4/5, 5 ratings
  11. Retro Ace

    Theory Not Ussop's Death, but YASSOP'S death!(small theory)

    A new youtube theory may have shown we've been looking at this the wrong way
    0/5, 0 ratings
  12. Rhodehawk
    4.75/5, 4 ratings
  13. Rhodehawk
    0/5, 0 ratings
  14. Rajatdhanuka
    2/5, 1 rating
  15. ImmaIvanoM

    Speculation MOON RABBIT MYTHS AND CARROT

    Oda has already referenced some Japanese Folklore of the Moon Rabbit, but there’s more he can do.
    4.6/5, 5 ratings
    Updated:
    Oct 10, 2018
  16. Pawkitt
    0/5, 0 ratings
    Updated:
    Oct 10, 2018
  17. 271 others
    1.16667/5, 6 ratings
    Updated:
    Oct 10, 2018
  18. rayleighking
    3.5/5, 2 ratings
    Updated:
    Oct 9, 2018
  19. DontGetSuckedIn
    1.85714/5, 7 ratings
    Updated:
    Oct 9, 2018
  20. Pawkitt

    Speculation Sanji the Spy

    The best spies are the ones that aren't known to be one.
    2.25/5, 4 ratings
    Updated:
    Oct 8, 2018
  21. ImmaIvanoM

    Speculation Wano’s Strongest Samurai

    I think Wano is going to have its own version of Mihawk, and he won’t be on anyone’s side.
    0/5, 0 ratings
    Updated:
    Oct 8, 2018
  22. donnerop

    Speculation 9 samurai sent back at different times

    all of the samurai were transported to different times
    1/5, 1 rating
    Updated:
    Oct 6, 2018
  23. Donal D. Trump

    Theory Toki and her powers explained! Another piece of the big picture revealed!

    Lets explore how Toki's powers EXACTLY work and how she is connected to the void century!
    5/5, 5 ratings
    Updated:
    Oct 6, 2018
  24. Syskill
    3.66667/5, 6 ratings
    Updated:
    Oct 5, 2018
  25. AnonymousStrawHat
    4/5, 4 ratings
    Updated:
    Oct 5, 2018
  26. Timmy
    4/5, 5 ratings
    Updated:
    Oct 5, 2018
  27. Saiko
    4/5, 4 ratings
    Updated:
    Oct 5, 2018
  28. princeAtlas
    4/5, 1 rating
    Updated:
    Oct 5, 2018
  29. Nesola
    3/5, 2 ratings
    Updated:
    Oct 5, 2018
  30. BKumafangirl67

    Speculation Time Travel

    What is the purpose of the Toki Toki no mi
    1/5, 1 rating
    Updated:
    Oct 4, 2018
  31. dirtyLarry

    Theory Kaido's relation to Ashura Douji

    Kaido is Ashura Douji. His soul was put into an immortal body by BM, that's the big favor.
    2.5/5, 2 ratings
    Updated:
    Oct 4, 2018
  32. ImmaIvanoM
    5/5, 1 rating
    Updated:
    Oct 4, 2018
  33. Afromugen
    3/5, 2 ratings
    Updated:
    Oct 4, 2018
  34. Commando_Nate

    Speculation Luffy V Kaido 1 on 1

    Not much evidence to back this up wrote it on reddit.
    3/5, 2 ratings
    Updated:
    Oct 4, 2018
  35. Marco One Piece Theorist
    4.75/5, 8 ratings
    Updated:
    Oct 3, 2018
  36. Chaosceptor
    0/5, 0 ratings
    Updated:
    Oct 3, 2018
  37. ImmaIvanoM

    Theory Who set up the graves in Wano?

    The hated Kozuki clan somehow have proper burial site in Wano?
    3.5/5, 2 ratings
    Updated:
    Oct 2, 2018
  38. Osama95

    Speculation Momonosuke after Wano

    What will happen to Momo and the rest after the events of Wano
    3/5, 1 rating
    Updated:
    Oct 2, 2018
  39. crate

    Theory The former owner of the Yami-Yami no mi

    Oden's Wife was the former owner of the Yami-Yami no mi
    3.88889/5, 9 ratings
    Updated:
    Oct 1, 2018
  40. kikX
    1/5, 1 rating
    Updated:
    Oct 1, 2018
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