The Final War of One Piece is set to be the greatest conflict that the world has ever seen, especially since it had been foretold many centuries ago. In this war, all of the most prominent figures and factions of the world will take part to see whether freedom prevails over the despotic rule of the World Government, as both sides have been amassing their armies and preparing themselves for a conflict so great that it will change everything.

As expected, Luffy and the Straw Hats will be fighting against the tyrannical forces of Imu to bring forth a new dawn for the world. Because of this, it's clear that they will need many allies, and the various countries that they have liberated throughout the One Piece story will side with them. However, as crucial as every ally is, there are three who stand above the rest, particularly because of their relationship to each of the Ancient Weapons.

One Piece: Dragon's Enemy In The Final War Is Stronger Than You Think

Monkey D. Dragon is set to be one of the franchise's strongest characters, which is why his opponent in the Final War will be just as powerful!

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By Haider Haroon Rasheed

Loki Is Going To Lead Elbaf And The Giants On The Side Of Luffy

The Accursed Prince Of Elbaf

First Appearance	One Piece, Chapter 1130, "The Accursed Prince"
Story Arc	Elbaf

Ancient Weapon: Uranus

Many have already argued that the single most important ally for Luffy in the Final War, outside his immediate Straw Hat crew, is the Prince of Elbaf, Loki. In fact, most theories even state that he will end up joining the crew, but what is very clear is that the strength of the Giants of Elbaf is enough to turn the tide to any side's favor in the Final War, and due to the depiction of the Giants alongside Nika in the Elbaf Mural, it's pretty much confirmed that they will join with Luffy against Imu.

I am the Sun God who will bring about the end of the world!

pluton-and-loki — Loki and Pluton from One Piece

Loki's backstory has unveiled many truths about the world, and one of the most notable of these details was the revelation of Loki's eyes. Although pure speculation right now, many fans have taken them to have some sort of correlation with the most mysterious of the Ancient Weapons, Uranus, since that is the only one that hasn't yet been accounted for. As for the others here, the same thing stands.

Shirahoshi Controls The Sea Kings And Is The Sovereign Of The Fishmen

The Ruler of the Fishmen

First Appearance	One Piece, Chapter 612, "Taken by the Shark They Saved"
Story Arc	Fishman Island

Ancient Weapon: Poseidon

Just like Loki, Shirahoshi is next in line for her respective kingdom and ties to the Void Century as the leader of one of the world's most important races. The lore of the Fishmen strongly implies that, in ancient times, they were also located on the surface at one point, but they may have been relegated to the depths of the ocean, which could be the reason why Joyboy even apologized to them on the Poneglyph. Due to the emphasis placed on them in the ancient and modern worlds, it's clear that the Fishmen are incredibly important to the Final War.

Along with that special mermaid will come one who can guide her to use her power for good.

More importantly, Shirahoshi is the only Ancient Weapon that fans have full disclosure about, since she is the manifestation of Poseidon. Poseidon is another name for the Princess/Queen of the Fishmen, who has the power to command the Sea Kings to do her bidding, making all who have ever owned this title some of the most powerful and important characters in the entire world.

One Piece: Rocks Is Still Alive Inside Blackbeard, And I Can Prove It

The mystery of Rocks and Blackbeard's relationship is ever growing, but this theory could finally prove how Rocks may still be alive!

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By Haider Haroon Rasheed

Momonosuke Rules All Of Wano As The Eldest Male In The Ancient Kozuki Line

The Shogun of Wano

Momonosuke declares he's the new shogun of Wano - One Piece

First Appearance	One Piece, Chapter 684, "Don't Do It, Vegapunk"
Story Arc	Punk Hazard

Ancient Weapon: Pluton

Momonosuke is the latest in the ancient Kozuki line, who were some of the most important allies of Joyboy during the Void Century, since it was they who carved his messages into the Poneglyphs. As the current Shogun of Wano, Momonosuke controls one of the most powerful non-World Government-affiliated countries in the world, which is also the place that holds some of the greatest historical significance in the setting. Because of this, he is undoubtedly going to be one of Luffy's greatest allies.

This is the birth of the man who would later be known around the world as the Great Shogun of Wano, Kozuki Momonosuke!

kozuki momonosuke most powerful families one piece

Just like Loki and Shirahoshi, he is also closely affiliated with an Ancient Weapon, though not as directly. This weapon is Pluton; the ancient battleship said to be powerful enough to destroy an entire island with a single blast. Due to it being located below Wano and behind its walls, it will only come into play once Momonosuke deems so by commanding Zunesha to destroy these walls so that Pluton can finally be free after 800 years.

The Connecting Factor Between These Three:

luffy-important-allies — Loki, Shirahoshi, and Momonosuke from One Piece

The reason why many fans consider these three to be Luffy's most important allies is that there are many notable similarities between them. The most basic of these is that they all have a pink color scheme, so it could be that Oda deliberately drew them as parallels to signify the importance of their roles in the Final War. Plus, there is a very clear connection that Momonosuke and Shirahoshi have to Ancient Weapons, and Loki's importance in the grand scheme of things promises something similar with Uranus, so it's very probable that such a connection exists.