The Sea Beast Weapons are gigantic sea creatures that Vegapunk fitted with machinery to patrol the seas surrounding Egghead. Sinking any vessel that approaches without clearance, they became a major obstacle during the island's battles in the Final Saga.
These living weapons began as ordinary Sea Beasts before Vegapunk rebuilt them as cyborgs with mechanical enhancements. The group gathers several distinct creatures together: among them stand a lion of the sea, a giraffe-like beast, and a reindeer variant, the last of which wears a top hat with its antlers poking out the sides in a clear nod to Chopper.
Set loose around Egghead, the beasts behave as relentless guard creatures, attacking on sight and dragging down any unauthorized ship that tries to reach the island. Lilith can call up a pack of them to throw at intruders, and Sentomaru and Kizaru were both able to direct their assaults during the Marine assault on the island.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

When I first decided to commit to watching One Piece seriously, I knew I was embarking on one of anime's longest and most beloved series. With over 100...
Their strength is considerable, enough that they routinely sink craft approaching without clearance. When CP0 drew near, the creatures took on the agents; two of the beasts were destroyed, yet Rob Lucci doubted the whole pack could be fended off, so he gave up the ship, which the weapons promptly swallowed. Because flesh still makes up part of their bodies, however, anything that pierces it can wound them, and the lasers of the Mark III Pacifista wiped out the entire group, helped by the fact that the beasts could not turn to counter strikes from behind. They also have no defense against Jewelry Bonney's fruit, which reverted one of them to such a young age that it stopped being a threat. During the Egghead fighting the weapons tore into the arriving Marine battleships until Kizaru shot one down and the Pacifista finished the rest, after which Vice Admiral Bluegrass commandeered the sea-giraffe with her own power and rode it alongside Doll against the Giant Warrior Pirates.
The Sea Beast Weapons are gigantic sea creatures that Dr. Vegapunk fitted with mechanical enhancements to patrol the waters around Egghead. They sink any vessel that approaches without clearance and became a major obstacle during the Final Saga's battles.
Vegapunk created the Sea Beast Weapons by rebuilding ordinary Sea Beasts into cyborgs with mechanical enhancements. He used them as living guards to protect the waters surrounding Egghead.
The Sea Beast Weapons include a lion of the sea, a giraffe-like beast, and a reindeer variant that wears a top hat with its antlers poking through, a clear nod to Chopper.
The Sea Beast Weapons were largely wiped out when the lasers of a Mark III Pacifista destroyed the whole group, since flesh still made up part of their bodies and could be pierced. Jewelry Bonney's Devil Fruit also neutralized one by reverting it to a harmless young age.
Lilith could summon a pack of Sea Beast Weapons against intruders, while Sentomaru and Kizaru directed their assaults during the Marine assault on Egghead. Vice Admiral Bluegrass later commandeered the sea-giraffe herself, riding it into battle against the Giant Warrior Pirates.
Looking for more on Sea Beast Weapons? The One Piece Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
Rights holders
All rights belong to their respective owners.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
Official resources:
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.