Figarland Shamrock is Shanks' twin brother. That is not a reading or an inference — Shamrock says it himself in chapter 1138, and Shueisha's own site repeats it in plain language: Shanks' older twin brother, commander of the God's Knights.

The more interesting story is that Japanese readers had been arguing about a second Shanks for years before the name Shamrock existed. That argument is still online, with dates attached. So rather than assert that "fans called it," we went back and read what they actually wrote, when they wrote it, and what they were looking at.

What is confirmed

Everything in this section is stated in the manga or by the official site.

  • Ch. 1134 ends with a hooded figure who looks like Shanks.
  • Ch. 1137, in the Weekly Shonen Jump issue released 27 January 2025, takes the hood off. The man is Figarland Shamrock, commander of the God's Knights, son of Figarland Garling.
  • Ch. 1138, released 3 February 2025, settles the relationship. Loki notes the resemblance; Shamrock answers that the pirate is his long-lost younger twin. In the same chapter he says Shanks returned to the Holy Land once.
  • 2 November 2025: the Volume 113 promotional announcement on one-piece.com describes Shamrock, in the site's own words, as Shanks' older twin brother and commander of the God's Knights. Tsuda Kenjiro voices him.
  • 28 June 2026: the official page for anime episode 1168, in the Elbaf arc, uses the same description.

Twin, older, Celestial Dragon, God's Knights commander. Below this line, nothing is canon unless it says so.

Where the twin theory came from

2018: it started as a misreading — and Japanese readers said so at the time

The oldest dated version we can verify has nothing to do with Shamrock. In chapter 907, during the Reverie, a red-haired man has an audience with the Five Elders. Some readers decided his facial scar looked wrong.

A Japanese blog post dated 6 December 2018 records the rumour that followed: that the man's trademark scar had vanished, and that for a while people wondered whether this was a different person from the pirate Shanks — possibly a twin. The same post then knocks it down, calling the observation a kind of misunderstanding produced by a horizontally flipped image.

THEORY (Dec 2018) — dismissed at the time. The scarless Shanks at the Reverie is a double or a twin. Evidence cited: a perceived difference in the facial scar between ch. 907 and earlier appearances. The post itself concludes the difference was an artefact, not a clue.

That is the honest starting point. In 2018 this was a minor rumour that at least one Japanese commentator already considered closed.

2023: God Valley gives it a real foundation

Chapter 1096 changed the footing. In the God Valley flashback, Garling addresses children — plural — while Shanks is one year old.

A theory post dated 1 November 2023 built on exactly that. Its argument: the plural means Garling had more than one child present at God Valley, so Shanks has at least one sibling. The same post then revisited the Reverie scene with a sharper version of the 2018 idea — not "the scar looks different," but "a pirate could not safely take a meeting with the Five Elders, so the man in that room may be a sibling who holds Celestial Dragon standing."

It named no one. It had no character to point at. Shamrock would not appear for another fourteen months.

THEORY (Nov 2023) — unconfirmed at the time. Shanks has a sibling, possibly a twin, and the figure who met the Five Elders may be that sibling. Evidence cited: Garling's plural address in ch. 1096, Shanks' age at God Valley, and the implausibility of a pirate's audience with the Gorosei.

December 2024: the closest call on record

Chapter 1134 ended on the hooded man, and Japanese readers immediately nicknamed him シャンク2 — "Shanks 2."

On 25 December 2024, a month before the hood came off, the theory channel とーやチャンネル posted a 24-minute breakdown that now has around 165,000 views. Working only from ch. 1134, it argued:

  • The hooded man is not Shanks. Reason: Shanks had already left Elbaf after the encounter with Kid and had been shown back in his own territory, so an immediate return made no sense.
  • He is Shanks' sibling. The video allows for a twin or a clone but settles on brother.
  • He is a Celestial Dragon and the commander of the God's Knights. Reason: the transport circle used to arrive is the kind only the God's Knights or the Five Elders can use, and Garling, as the Knights' supreme commander, would plausibly hand the field command to his own son.

Every one of those held.

What Japanese fans got right

Set against what chapters 1137 and 1138 confirmed, the December 2024 call was close to complete: the hooded man was a separate person, he was Shanks' sibling, he was a Celestial Dragon, he was Garling's son, he was the God's Knights commander, and he was the antagonist the Elbaf arc had been building toward.

The 2023 post deserves separate credit for a narrower reason. It reached "Shanks has a sibling" from a single plural noun in a flashback, fourteen months before there was a face to attach it to.

What they got wrong

This is the part that disappears when a theory gets retold after the fact.

The name. The December 2024 video predicted Figarland Crown. The reasoning was genuinely elegant: the parts of a ship's anchor are the crown, the shank and the fluke, so Oda would be naming Figarland's children after anchor parts, with Shanks as the shank. The real name is Shamrock — a clover. The anchor scheme does not survive contact with it.

Three siblings. The same anchor logic produced a third child, Fluke. No third Figarland sibling has been confirmed.

Twin versus brother. The 2024 video hedged and leaned toward "brother." The word twin belonged to the weaker 2018 version of the idea, which was working from bad evidence.

The 2018 evidence itself. Shamrock's existence does not retroactively vindicate the scar observation. And Shamrock's own line in ch. 1138 — that Shanks returned to the Holy Land once — supplies a mechanism by which the man at the Reverie could have been Shanks after all.

So the theory that landed was not the one that had been around longest. It was the one rebuilt in 2023 and 2024 on different evidence, which happened to reach a similar conclusion.

Why this matters

The reason to go back through dated Japanese posts is not to hand out credit. It is that the useful artefact is the shape of the argument, not the hit.

Three separate attempts reached "there is a second Shanks" from three different places: a suspected art inconsistency in 2018, a plural noun in 2023, and a logistics problem about travel time in 2024. Only the last two were built on evidence that survived. Reading them in order shows how a Japanese-language theory community actually converges — slowly, on rebuilt foundations, discarding its own earlier reasoning.

That is also why the retrospective version is misleading. Search now and you will find posts explaining that the twin was obvious all along. The dated record says otherwise: in 2018 it was a rumour a Japanese blogger dismissed, and in 2024 the person who got closest still got the name and the sibling count wrong.

What could be next

Three questions the manga has not answered. None of this is confirmed.

THEORY / UNCONFIRMED — 1. Who actually met the Five Elders in chapter 907? Shamrock's existence makes him a candidate, and if it was him, the pirate he came to discuss reads very differently. But ch. 1138's line about Shanks returning to the Holy Land leaves the original reading open. The manga has not said.

THEORY / UNCONFIRMED — 2. Is there a third Figarland child? The anchor-naming theory that produced one is dead, but Garling's plural address at God Valley is still on the page and still unexplained.

THEORY / UNCONFIRMED — 3. Why did Shanks leave? Ch. 1138 establishes that he went back to the Holy Land and chose the world below it. What he learned there, and from whom, has not been shown.

We will keep these on the Theory Radar and update this article if any of them move.