TL;DR: Imu is the true ruler of the World Government, sitting secretly on the Empty Throne that is supposed to hold no one. They have existed since at least the Void Century, possess a power capable of erasing entire kingdoms, and are the final answer behind every act of the World Government's most extreme violence. Almost nothing about them has been explicitly confirmed.
The Throne That Was Supposed to Be Empty
The Empty Throne is the World Government's founding mythology. The twenty kingdoms who created the Government brought their rulers' weapons to Mary Geoise and left them around the throne as a symbol: no single person rules. Power belongs to everyone. The throne holds no one.
Chapter 908. The Five Elders enter the throne room and kneel. Imu is sitting on it.
One Elder says: "Is there a light… that must be extinguished from history?"
Imu holds up a picture of Luffy. A picture of Shirahoshi. A picture of Vivi. The implication: the World Government's highest-priority targets are chosen by a person whose existence is kept secret from the world.
Every Buster Call, every assassination order, every kingdom erased from history — these decisions come from here.
The Hierarchy of Control
Imu is at the top of a pyramid that the series has shown operating at every level of the story without explaining its source.
The Five Elders (Gorosei) are Imu's direct subordinates — they govern publicly, conduct meetings, issue orders to Cipher Pol and the Marines. For most of the story's first half, they appeared to be the actual top of the World Government. The throne room reveal reframes everything they did: every order came from above them.
Below the Gorosei: the individual intelligence branches. Cipher Pol units, from CP1 through CP0, operate as covert enforcers. The Marines — Admirals, Fleet Admiral — operate as the public military arm. Every structure exists to maintain the order Imu has sat on top of for 800 years.
The weapons displayed around the Empty Throne — the original rulers' weapons placed there symbolically — are the structural metaphor for what the government claimed to have built. A world where no single ruler holds power. The throne room scene reveals that this founding claim has been false since before any current character was born.
What the Series Has Shown
During the Levely — the world summit at Mary Geoise — a kingdom called Lulusia was destroyed. Completely erased from the map. The destruction came from above: a massive column of energy that struck with precision from the sky. The island's citizens, the ships around it, everything. Sabo, who was present on the island and had just witnessed the Reverie's events, was presumed dead.
This is the first on-panel demonstration of Imu using power directly. Erasing an entire nation — not besieging it, not overthrowing it, erasing it — establishes Imu not just as a political figure but as a combatant of catastrophic scale. The method aligns with what would be expected of Uranus — the unnamed Ancient Weapon associated with the sky.
In the Egghead Arc, Imu descends from Mary Geoise with the transformed Five Elders. Their physical form is partially revealed: tall, dark-robed, long dark hair cascading over their shoulders, face partially obscured. The visible features suggest someone feminine or androgynous. They are enormous — either abnormally large for a human or the scale is distorted by the visual framing.
The Five Elders reveal their true forms at Egghead: not human. They transform into massive mythological creatures — Saturn takes the form of a spider-like demon with multiple limbs, others take equally inhuman forms. These creatures have existed for centuries, like Imu, and can regenerate from apparently lethal injuries. The series confirms at Egghead that the Gorosei are not the political administrators they appeared to be. They are Imu's enforcers.
The Five Elders at Egghead
Saint Jaygarcia Saturn arrives at Egghead Island with a naval fleet to oversee the elimination of Dr. Vegapunk. His appearance establishes the Five Elders as active combatants, not administrators.
Saturn's transformed form is the series' most extensive reveal of what the Gorosei actually are. He demonstrates abilities the story hadn't previously shown at the government's level: summoning, transformation, regeneration from wounds that would kill any other character. He treats Marines and even Admirals as subordinate tools to be discarded.
The message to the reader: the power structure the series spent decades showing was itself a concealment. The Admirals, who appeared at the top of the Marine hierarchy, operate under creatures who have been alive since the Void Century.
What Imu Is
Imu has been sitting on that throne for at least 800 years. The World Government was founded at the end of the Void Century. If Imu was present at its founding — or is the reason it took the shape it did — then they are either extraordinarily long-lived by nature, or they received the Ope Ope no Mi's Perennial Youth Operation at some point, or they are something outside normal human parameters entirely.
The Perennial Youth Operation — performed by the Ope Ope no Mi at the cost of the user's life — grants immortality to the recipient. The World Government has been hunting for this surgery for generations. Law's fruit and the surgery's existence as a plot element are downstream of whatever mechanism was used to keep Imu alive. If Imu received this surgery 800 years ago, someone performed it and died — which means either a Devil Fruit user of the previous era sacrificed their life for Imu, or the fruit has passed through multiple users over the centuries.
The Lulusia destruction points toward Imu possessing or embodying one of the Ancient Weapons. The scale and top-down nature aligns most directly with Uranus — the least-described of the three weapons, whose form and location the series has held back entirely. If Imu is Uranus, or controls Uranus, it would explain why the weapon has been "hidden" for 800 years: it has been continuously in the hands of the world's secret ruler, used to erase kingdoms and maintain order.
The Five Elders' inhuman nature suggests that Imu may not be a normal human either — that whatever process or power made their longevity possible was applied to the Gorosei as well, creating a ruling tier of entities that cannot be permanently killed by conventional means.
Who Imu Is Watching
The scene in chapter 908 shows Imu holding three images after the Elders ask about lights to be extinguished: Luffy's wanted poster with his name circled, Shirahoshi, and Vivi.
Luffy: the person who will inherit Joy Boy's role, who the series positions as the World Government's existential threat.
Shirahoshi: Poseidon — the living Ancient Weapon who can command Sea Kings. The piece of the three weapons that cannot be hidden in the ground.
Vivi: The Nefertari family is one of the original twenty kingdoms, but uniquely chose to stay in their homeland rather than move to Mary Geoise as Celestial Dragons. This has made them historically suspect in the World Government's eyes. Whatever Vivi witnessed at the Reverie — and whatever she told the world about it — made her personally relevant to Imu's list.
The connection between these three figures is that each represents a threat to the order Imu maintains. Together, they connect to Joy Boy's legacy, the Ancient Weapons, and the knowledge that the World Government is built on a hidden ruler.
Why Imu Is the Answer
One Piece has spent 25 years building toward a question: who decided how the world would be arranged? Who ordered the Void Century erased? Who decided Joy Boy should fail? Who has been directing the World Government's most extreme acts — the Buster Calls, the hunting of Robin, the destruction of kingdoms that got too close to the truth?
All of it traces back to Imu making decisions from a throne that was supposed to be empty.
Defeating or exposing Imu — almost certainly requiring Robin's reading of the Rio Poneglyph, Gear 5 in full operation, and the ancient weapons assembled — is the series' structural endpoint. Not just because Imu is powerful, but because the entire world order is built on the lie that the throne is empty. The moment that lie is exposed, everything built on top of it becomes indefensible.
What Remains Unknown
Imu's actual name, confirmed species, and confirmed origin. Their specific power or weapon. Whether they are the same individual who existed 800 years ago or a succession. What they personally want beyond maintaining control. Their relationship to the Void Century's actual events — whether they were one of the twenty founding kings, a survivor of the Ancient Kingdom side, or something entirely outside those categories.
The series has shown Imu for exactly as long as is needed to confirm they exist and establish their scale. Everything else is still coming.
FAQ
Is Imu the final villain of One Piece? Imu and Blackbeard are both converging as final antagonists. Whether the series resolves both, one, or something more complex hasn't been established. Imu is the World Government's answer. Blackbeard is the pirate world's answer.
Is Imu related to Luffy or any main character? Several theories connect Imu to Luffy's lineage — Dragon's Revolutionary Army exists specifically to oppose the World Government, and Luffy is specifically targeted by Imu. These connections are unconfirmed. The framing is suggestive but nothing explicit has been stated.
How has Imu stayed hidden for 800 years? The World Government controls all official information. The Gorosei publicly govern. Anyone who gets too close to the truth gets a Buster Call. Robin was wanted since age eight precisely because she could read the stones that might eventually explain who the throne holder is. The information control isn't incidental — it's Imu's primary defense.
Does Imu have a Devil Fruit? Unconfirmed. Their demonstrated power — destroying Lulusia Kingdom from above — does not match any known Devil Fruit. Theories connect this to Uranus, the third Ancient Weapon. Whether Imu embodies the weapon, controls it, or is something else entirely has not been established.
