In the world of One Piece, Devil Fruits are the source of all powers, but not every ability carries an evil vibe. Still, some characters and techniques clearly exude a demonic aura, from their names to the true nature of their strength.
Here are some devil-inspired powers in One Piece:
1. Akuma no Mi, The True Power of Imu Sama?

“Akuma no Mi” translates as “Devil Fruit,” symbolizing power throughout the series. However, in chapter 1179, Imu is believed to possess the power of the very “Devil Fruit” itself. Imu not only appears as a dark entity but can transform lifeless objects around them into terrifying, demonic forms.
2. Demonio Fleur, When the “Child of the Devil” Awakens

Nico Robin’s Demonio Fleur technique combines Spanish (Demonio – Devil) and French (Fleur – Flower). Once hunted worldwide as the “Devil’s Child from Ohara,” Robin has now fully embraced this identity. This transformation carries deep symbolism: she accepts the “devil” label imposed by the world to protect those she loves.
3. Domi Reversi, The Power to “Reverse” Reality

Imu’s Domi Reversi power derives from Latin: ‘Dominus’ meaning ruler, and ‘Reversi’ meaning reverse. In mythology, bending truth and fate is a privilege of great demons. Even more terrifying, anyone affected by Imu’s reversal power instantly loses their humanity and turns into a brutal demon.
4. Oni Giri, The “Demon King” Zoro’s Slash

Zoro’s signature move Oni Giri combines “Oni” (a Japanese demon or ogre) and “Giri” (slash). In Japanese culture, Oni symbolize raw power and punishment. When Zoro unleashes his full strength, his aura often appears as a fierce demon shadow, showcasing the deadly spirit of a sword master who has reached the “demon path.”
5. The Five Elders (Gorosei), Yokai Warriors from Hell

The five elders of the World Government each take on forms inspired by Yokai, supernatural monsters from Japanese folklore:
Saint Saturn: Ushi-Oni (Ox Demon), a symbol of fear.
Saint Mars: Itsumade, a giant bird that foretells disaster.
Saint Warcury: Houki (Boar Demon), destructive power.
Saint Nusjuro: Yasha (Demon Warrior), a half-demon spirit of war.
Saint Ju Peter: Sandworm, a monster that devours everything underground.
6. Diable Jambe & Ifrit Jambe, Sanji’s Devilish Kicks

Diable Jambe means “Devil’s Leg” in French. When upgraded to Ifrit Jambe, Sanji references Ifrit, a powerful, fiery spirit from Arab mythology. This fusion of Western (devil) and Eastern (fire spirit) cultures creates blazing power that incinerates all enemies.
7. Venom Demon, The Jailer of Impel Down

Magellan’s strongest technique is Venom Demon. In many cultures, poison is linked to sin and hellish punishment. Magellan transforming into a giant venomous demon perfectly fits his role as the warden of Impel Down, known as the “hell on earth” prison in One Piece.
8. Yamata no Orochi, The Cunning Eight-Headed Demon

Orochi’s Mythical Zoan Devil Fruit is based on Yamata no Orochi, the legendary eight-headed serpent slain by the god Susanoo. Though Orochi isn’t a strong fighter, his persistence, near-immortality, and cunning nature perfectly reflect the folklore demons’ traits: clinging on to spread suffering.