One Piece Encyclopedia

Ammo Knights

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Ammo Knights
Ammo Knights Infobox
Japanese Name: アンモナイツ
Romanized Name: Anmo Naitsu
English Name: Ammo Knights
Debut: Chapter 609; Episode 528
Affiliations: Neptune family; Ryugu Kingdom
Occupations: Guards

The Ammo Knights serve as the royal guards for the Neptune family on Fishman Island. They wear large striped snail shells as helmets and shoulder pads with their eyes covered by a black mask of some kind. The helmets have a spike sticking out in the front, similar to a that of a unicorn. They carry tridents with them.


The Ammo Knights are presumably strong being the royal guard of Fishman Island. They are powerful enough to maintain law and order in the kingdom though they were no match for the New Fishman Pirates, although the pirates needed energy steroids to win implying that the Ammo Knights they are stronger than normal Fishmen.


They are first seen when the princes visit Mermaid Cove. They are ordered to apprehend the Straw Hats around the island but fail to do so. Later, at the palace, they are defeated by the Straw Hats and get tied up along with Neptune and his ministers.

Later, several Ammo Knights appear outside the island and inside the control center for the island's air tank, ready to help Luffy and the princes launch a burst of air at Noah to redirect its course.


  • Ammo Knight is a play on the word "ammonite", the fossilized remains of the shells from ancient cephalopods, given that the knights wear such shells as part of their uniforms.

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