Goe Goe no Mi

Shown only in the debut theatrical movie, this Paramecia holds a record: no earlier non-canon Devil Fruit had appeared anywhere in the series. Eldoraggo, that film's chief antagonist, is its lone wielder.

The gimmick turns noise into a weapon, converting an ordinary yell into destructive force. Its name draws on koe, meaning voice in Japanese.

A shout from the holder unleashes tightly focused sound that can rip apart whatever stands in its way, useful both for smashing enemies and for digging through the ground. The strength behind each burst can be dialed up or down at will.

Powerful as they are, the beams will not detonate when they meet a pliant surface, which let Luffy scoop one up with his rubber body and fling it straight back at Eldoraggo. The wielder gains no protection from their own sound either, and the standard Devil Fruit weaknesses stay in effect. Its power sits in the same family as the Oto Oto no Mi held by Scratchmen Apoo, plus the Uta Uta no Mi, all of which weaponize sound or voice.

Eldoraggo mainly bellows at his foes, using the sound blasts to wreck them. A yellow aura flares around him just before he fires, its brightness rising or falling with the power of the coming shot.

His subordinate Danny gives the same trick a different name, calling it the Devil's Technique.