Neptune is the king of the Ryugu Kingdom and a coelacanth merman. He is also called the “Sea God Neptune.” Neptune comes from Fish-Man Island. He is 70 years old, his birthday is July 3, and his height is 12.2 meters. His zodiac sign is Cancer, and his blood type is X. His favorite food is seaweed salad. Neptune is much larger than most people and has a thick beard. He was once a brave knight, but now, he often suffers from back pain because of his age. He is open-minded and cares for his people and family, especially his daughter Shirahoshi. Neptune is an expert in trident fighting and merman jujutsu. He has a close relationship with his children and shows kindness to humans. His story connects with the Straw Hat Pirates, the royal family, and the World Government.
Neptune is a giant coelacanth merman and is much bigger than normal merfolk.
He has a very thick beard and long hair.
Because of his massive size, he looks powerful and impressive.
Neptune is a kind and gentle king who always worries about his people and family.
He uses the word "jamon" at the end of his sentences.
Although he used to be a famous knight called the "Great Knight of the Sea," now he suffers from back pain.
Neptune is open-minded and flexible.
He does not hold onto old, harsh laws, and forgave Jinbe when he gave blood to a human, which was once against the law.
Neptune became king 26 years ago after the last king died.
He was not married at that time, and he was not in favor of Otohime’s political demonstrations.
Neptune thought that because he had once fought and defeated humans in battle, he was not worthy to support his wife’s cause for peace with humans.
Neptune is a master of trident combat and merman jujutsu (also called Merman Combat).
He is the only person on Fish-Man Island who can speak to whales.
One of his techniques is called "Ultramarine," which lets him grab seawater and create a huge ocean current.
Neptune loves his family, especially his daughter Shirahoshi.
He cares deeply about his wife Otohime and his children.
He has a good opinion of Jinbe and did not punish him for helping humans.
He is also kind to the Straw Hat Pirates after they save his family.
Meeting the Straw Hat Pirates
After Megalo, Shirahoshi’s pet shark, is saved, Neptune invites the Straw Hat Pirates to Ryugu Palace.
He soon hears a fortune by Madame Shyarly that the Straw Hats will bring disaster to Fish-Man Island, so he tries to catch them but ends up being tied up himself.
Hody Jones' Attack
When Hody Jones attacks, Neptune is freed for a while, but gets caught again.
He is almost executed in Gyoncorde Plaza, but Luffy D. Monkey and his friends save him.
After the fight and the end of the coup, Neptune locks up Hody, Vander Decken, and their followers.
He closes down the Fish-Man District and puts the rest of the New Fish-Man Pirates under the military’s watch.
The Reverie
In the World Council arc, Neptune brings his children to Mary Geoise for the Council.
When Shirahoshi is nearly caught by the Celestial Dragon Saint Charloss, Neptune almost loses hope for peaceful living with humans.
Saint Mjosgard saves Shirahoshi, and peace is restored.
After the meeting, Neptune returns home with the protection of Garp and hears news about bad things happening to the royal family of Alabasta.
- Neptune's birthday is July 3.
- He is 12.2 meters tall, and his blood type is X.
- His favorite food is seaweed salad.
- He can talk to whales, which no one else on Fish-Man Island can do.
Neptune used to be called the "Great Knight of the Sea."
He used to dislike Otohime’s wish for peace but changed after seeing his family and people’s pain.
He is known as the "Sea God Neptune."
- "Jamon!" (A word he often says at the end of sentences)
- “I want my people and my family to live in peace.”
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