The mysterious ruler of the world, Imu, has finally stepped out of the shadows in One Piece’s Final Saga, and their terrifying powers have shaken the fandom to its core. Long believed to be a symbolic figurehead, Imu has now proven to be the true godlike authority behind the World Government, capable of manipulating life, death, and even reality itself.
From possessing others to annihilating islands, here’s a breakdown of every ability One Piece has revealed about Imu so far.
List of all Imu's known powers in One Piece
The immortal ruler of the world

In One Piece, it seems like Imu's more dangerous power might not even be any attack, but the fact that this character exists. As it is now confirmed that Imu has been ruling over the world for more than 800 years and outlived all the legends, like Joy Boy himself, this makes him scary.
This all points to an ability that could very well be immortality. The fact that this character has survived countless years also implies that they could be more of a god than a human, as no human can survive for so long.
Possession and telepathy
Now, if we talk about Imu's strongest power till now is their ability to possess others. Moreover, to add to this ability, they can also communicate via telepathy. Interestingly, we also know that there is a restriction when it comes to distance. Imu can be as far or as near to activate this power.
For instance, it is shown in One Piece on how Imu took control over Staurn's body and easily took his immortality away. Now it also means that Imu can not only control the body but also has access to one's life energy.
Through possession, Imu can channel their strength and demonic form through other bodies, including the Knights of God, allowing them to fight on multiple fronts simultaneously. This “shared consciousness” over the Five Elders hints that their powers are merely extensions of Imu’s own being.
The power of the abyss
Imu also has the power to command over this mysterious thing known as the Abyss in One Piece. It is supposed to be an energy source that can override any laws of nature. By using dark, circular seals, Imu can summon weapons, portals, and even entire creatures from this otherworldly dimension.
The technique known as A Kuwaru (“Demon’s Contract”) allows Imu to turn victims into immortal demons in exchange for their lifespan, essentially forging pacts of darkness.
Many people have noted that this type of power is tied to Japanese Yokai Mythology. Two particular names need to be brought to light: Nekomata and Bakeneko. They are feline spirits associated with necromancy, shapeshifting, and possession
Demonic transformation

In One Piece, Imu’s most visually striking power is its demonic form, a massive, winged monster wielding a trident and exuding overwhelming darkness. This transformation first appeared when Imu confronted Sabo in Pangaea Castle.
In this form, Imu easily goes against multiple strong opponents. During the Elbaf arc, we could see Imu's partial transformation when they had taken control over Gunko. If this character decides to combine this power with the Abyss, then it would be extremely difficult to fight against them.
Supreme King Haki

Imu is seen as a God of the world in One Piece. Even if this is not an official title, many agree that this kind of title is suitable for someone who is near invincible. It is also confirmed that they have the Supreme King Haki of extraordinary magnitude.
When released, their Conqueror’s Haki sends shockwaves powerful enough to incapacitate entire battalions of giants across Elbaph. Even strong characters like Gaban reacted to this type of energy. Additionally, it has also been confirmed that Imu's Haki is stronger than Luffy's.
Weapons of destruction
Beyond supernatural abilities, Imu in One Piece also commands the Ancient Weapons, specifically the Mother Flame-powered satellite that erased the Lulusia Kingdom from existence.
This act alone proved that Imu’s arsenal extends beyond Devil Fruits and into apocalyptic technology. Using the Mother Flame, Imu can obliterate islands in seconds, a power befitting the one who claims to rule the world.
The God of the Void

In One Piece Chapter 1149, Imu declared:
“Mu will show how a god rules over the world.”
If we are to translate the name "Mu," it means nothingness. Just like how Imu has been. This character's existence was hidden for so long, and it quietly kept on ruling the world. We could also interpret Imu's existence to be the absence of freedom, which is the opposite of what Luffy represents in One Piece.
Final thoughts
Imu's full strength and capabilities are yet to be uncovered. Oda has been taking his time to introduce this capable villain, who seems to be the strongest character in the world of One Piece. Furthermore, their existence is now challenging the core theme of the story: Freedom.
As Imu has outlived many and seems to have the power of immortality backing them, it seems like they are going to be the final villain of the story. Oda’s story is near its end. Imu stands as the ultimate test of everything Luffy represents, the void that only true freedom can fill.