
The vast universe of One Piece introduces viewers to a variety of Devil Fruits, each classified by their apparent might, flashiness, or destructive capabilities. Names like Gura Gura no Mi
and Magu Magu no Mi
summon images of ferocious powerhouses such as Whitebeard and Akainu. However, lurking in the shadows are lesser-known fruits, equipped with abilities that can alter the tide of battles, influence emotions, or even alter reality itself.
This discussion revolves around those frequently overlooked Devil Fruits—ones with quirky aesthetics, unusual users, or seemingly innocuous names. Beneath their surface lies untapped potential for world-altering devastation in the right hands.
Presenting the most underrated Devil Fruits from the One Piece series.
7.Horo Horo No Mi
Platform

Possessing the power to drain your will to live, Perona’s Horo Horo no Mi
can conjure Hollows, ethereal apparitions that sap the morale of their targets instantly. Regardless of an individual’s staunch spirit, encountering her ghosts can lead to a quick decline into despair, rendering even the most formidable fighters incapable of action.
Moreover, Perona can generate explosive Mini Hollows and even project her consciousness astrally, safely distancing her physical form. Her abilities are particularly suited for espionage and incapacitating foes, though the world of One Piece often relegates her to the role of comic relief.
Consider Perona in a strategic scenario like Marineford: by sending her ghosts into the fray, she might have forced Admiral-level adversaries into temporary submission, facilitating escapes for pivotal characters like Luffy and Ace. No brute strength or Haki was necessary—proximity and time alone would have showcased the true menace of the Horo Horo no Mi
.
6 Mountain Mountain No Mi
Ivankov

The Horu Horu no Mi
endows Ivankov with the extraordinary capability to manipulate hormones—his own or others’.A mere jab can alter gender, reorganize bodily chemistry, or elevate adrenaline levels to sustain individuals through severe injuries.
During the Impel Down arc, Ivankov saved Luffy’s life after a hazardous poison attack from Magellan, utilizing hormone injections as a biological aid. His abilities are not purely medical; they represent an impressive level of biological control.
He can bolster his allies, unleash dormant potential, or dismantle an opponent’s immune system. In maleficent hands, this fruit could facilitate oppression or warfare. However, due to Ivankov’s dedication to freedom and revolution, its potential lethality is often understated.
5.Bisu Bisu No Mi
Charlotte Cracker

The Bisu Bisu no Mi
empowers Cracker to create and manipulate biscuits. Initially, this may seem whimsical, but he has transformed it into an effective weapon in the New World.
Cracker can harden these biscuits to a metallic toughness, crafting formidable soldiers and defensive structures. For example, during the Whole Cake Island arc, Luffy struggled for eleven hours to assault Cracker while he shielded himself within cookie constructs.
These biscuit soldiers exhibit regenerative properties and draw strength from Cracker’s imaginative prowess, allowing him to fabricate walls, weapons, and even clones. Envision waves of biscuit warriors fortifying an island—paired with Haki, this could become an invincible battalion.
Luffy’s victory came about only because Nami utilized weather powers to soften the biscuits. Had the circumstances differed, Cracker’s forces could have proven insurmountable.
4.Bari Bari No Mi
Bartholomew

Bartolomeo’s Bari Bari no Mi
grants him the ability to create indestructible, invisible barriers, yet many incorrectly regard it merely as a support skill. In combat, the potential is greater.
Bartolomeo can craft barriers into various shapes—walls, stairs, even colossal fists to launch opponents. Notably, he thwarted King Elizabello’s infamous “King Punch”, a strike powerful enough to decimate a structure.
His barriers can contain adversaries, intercept attacks, and even serve as platforms for offensive maneuvers. Remarkably, Bartolomeo’s barriers have yet to meet their match. Even the formidable crew of Gol D. Roger once feared this fruit when it was held by Kurozumi Semimaru.
Were Bartolomeo to focus on mastering his abilities like Law or Doflamingo, he could become nearly invincible, an untouchable player on the battlefield.
3 Work For Me
Nico Robin

Don’t underestimate Hana Hana no Mi
; it is designed for stealth attacks, interrogation, and swift incapacitation of targets.
Robin can sprout limbs—arms, legs, or even eyes—on any surface, including on an adversary’s body. In mere moments, she can extend her limbs to incapacitate combatants, as demonstrated against giants and trained fighters alike.
Her tactical acumen enhances her formidable abilities, allowing her to deliver lethal strikes when fully committed, albeit she often prefers to resolve conflicts non-violently.
2.Doku Doku no Mi
Chief Warden Magellan

Regarded with similar fear as Logia fruits, the Doku Doku no Mi
allows the user to generate and control poisons in versatile forms, including liquid, gas, and sludge, making Magellan a formidable biohazard.
In Impel Down, he almost eliminated Luffy with one venom assault. Magellan can inundate an area with toxic gas, apply neurotoxins to his attacks, and transform into a massive Hydra composed entirely of poison.
No one managed to escape Impel Down under his watchful eye; even Blackbeard retreated injured after a brutal encounter. The miraculous prison break required a sequence of fortuitous events, underscoring Magellan’s prowess.
The tragedy lies in the fact that many overlook his strength due to his lack of flashiness and his absence from major pirate conflicts. Pure lethality ranks him among the most dangerous of Devil Fruits; a single interaction or inhalation could spell doom.
1 Hobi Hobi No Mi
Sugar

Though initially appearing to be a minor threat, Sugar wields the Hobi Hobi no Mi
, which could arguably be the most terrifying Devil Fruit in the entire series.
With a mere touch, she has the ability to transform any living being into a toy—an act of extraordinary consequence.
In Dressrosa, Sugar managed to effectively stifle an entire rebellion by converting hundreds of individuals into toys, causing entire lineages to forget their loved ones, while enemies disappeared without a trace.
As long as Sugar remains awake, these transformations are irreversible—offering no countermeasure or remedy. She was pivotal to Doflamingo’s reign, overshadowing others like Trebol, Diamante, and even Doflamingo himself.
If endowed with the willpower to use her powers on a grand scale, Sugar could eradicate nations. The Hobi Hobi no Mi
doesn’t merely eliminate foes; it redefines reality.
Its true potential is masked by the innocent appearance of a child enjoying a tea party.
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