The strongest Merfolk in One Piece

Key Takeaways

• Merfolk are relatives of the fish men, both of whom face historical oppression and slavery.
• Strong merfolk, like Hyouzou and Aladine, can hold their own in battle.
• Shirahoshi, probably the most powerful mermaid, due to being an ancient weapon.

Merfolk It's a bit of a niche, but it's kind of active there One piece. They are genetically related to fish men, and the main difference is that the fish-fish character is more pronounced above than below. Like fish, merfolk are also biologically compatible with humans, as these three tribes have a deep connection with their ancestors.

However, historically oppressive attitudes, as well as merfolk being highly prized slaves, meant that most of them were forced to stay in the water. However, it turns out that some merfolk are very good at fighting for themselves. Here are some of them the strongest merfolk shown there One piece until now.

5 Hyouzou

Hired Officer/Sword of the new Fish-Pirates

• Debut: Chapter 607 (Manga), Episode 527 (Anime)
• type: Merman blue octopus

Hyouzou was considered the strongest swordsman on the island of fish man. Arlong captures her, but the pair's partnership fails because Arlong doesn't want to pay for her services. Hyouzou said that this was the reason why Hatchan, an octopus fish man who was good at swords, was part of the Arlong Pirates.

Hody Jones learns from Arlong's mistake and is ready to pay Hyouzou. The merman didn't care about Hody's ideals, but he did the officer's job because it paid for it. He is shown to be fast enough to stop Luffy in his Gear 2 form, and can kill many enemies. By taking the blue octopus, it can also release poison. Hyouzou was ultimately no match for Zoro, a fact that was exacerbated after consuming too much energy steroids that turned him into a feeble old merman.

4 Aladdin

First Mate / Doctor of the Sun Pirates

• Debut: Chapter 620 (Manga), Episode 540 (Anime)
• type: Goatsbeard Brotula Merman

Aladdin was a slave along with his former captain, Fisher Tiger, and many of his companions. He is the only member of the Sun Pirates who was both with the team before Tiger's death and remains with them to this day, as most of his teammates have either formed or joined the another pirate crew after the fact. When Jimbei was the captain, he became the second in command, and it is possible that he could be the captain now because of Jimbei's departure.

In addition to his medical training, Aladine is a master of karate-fishing, able to go head-to-head with the likes of Charlotte Oven, a famous officer of the Big Mom Pirates. Like most of its kind, it can also swim, although unlike some horsemen, its body allows it to land on land without additional assistance.

3 The Neptune Brothers

Prince of Ryugu Kingdom

• Debut: Chapter 609 (Manga), Episode 528 (Anime)
• type: Shark Merman (Fukaboshi), Oarfish Merman (Ryuboshi), and Opah Merman (Manboshi)

Fukaboshi is one of the three sons of Neptune and Otohime, and next in line to the throne. Like his family, he is devoted to his mother's dream of a peaceful relationship with humans,​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ He is generally portrayed as mature and loyal, in contrast to his younger siblings, Ryuboshi SY Manboshiwhich duo is funnier.

All three are very powerful, with the New Fish-Man Pirates needing to take energy steroids to surpass their abilities. Unlike his father, all three are still in their prime, with Fukaboshi in particular showing the ability to recover quickly from his injuries. That said, they're no match for the pirates once they're off their steroids, relying on the Straw Hats and Jimbei to help them out even more.

2 Neptune

Ruler of the Ryugu Kingdom

• Debut: Chapter 611 (Manga), Episode 530 (Anime)
• type: Coelacanth Merman

Neptune was the late wife of Otohime, a beloved mermaid ruler who longed for peace. Neptune works hard to keep her late husband's dreams alive, and is generally loved by her subjects. He is also able to communicate with whales, a rare ability for mermen. This is what he mainly uses to communicate with his giant pet whale, Hoe, which is also a means of transportation.

Even in his 70s, Neptune is a powerful knight, able to withstand Hody's attacks even after the pirate's energy is consumed by steroids. That is, his age had caught up with him, so that even physical endurance could be a consequence of the extreme strain of battle.

1 Shirahoshi

Princess of Ryugu Kingdom

• Debut: Chapter 612 (Manga), Episode 531 (Anime)
• type: White Mermaid

Shirahoshi is the daughter of Neptune and Otohime. He is famous for his giant size, bigger than his mother and his older brother who is less than a year old. He was rather fragile, spending most of his life in a locked tower and cared for by his family. His weakness is that Luffy called him a crybaby when the two met. He needed her to watch over him as he left his room for the first time in years.

Although she tries to be brave when she joins her family for Levely, she is quickly captured by World Noble Charlos, who wants to make her a slave. However, thanks to the timely intervention of World Noble Donquixote Mjosgard, along with Sai and Leo of the Straw Hat Grand Fleet, the mermaid is saved.

Despite his current condition, Shirahoshi was most likely much stronger than his kin. This is due to his being an ancient weapon, Poseidon, a trait he inherited from a distant ancestor. Poseidon's main asset is the ability to control and communicate with the sea kings, powerful beings that populate all known seas. They respond to his feelings and desires, such as his desire to help Luffy, even though he did not directly ask for their help. In addition, it is possible that he could grow in physical strength if he wanted to, as his kin were some of the most powerful merfolk in existence.