This article, Mercury Jasper, is property of KingD3.

Mercury Jasper is a snakeneck and the first mate of the One-Eyed Pirates.


Jasper has a long neck signature of his race. He has a thin, yet muscular body. His curtained purple hair messily frames the sides of his face.

He wears a scarf resembling a snake that completely obscures his neck because of his insecurities over it, and a camouflage long-sleeve shirt with light-colored pants tied by a sash and tucked into boots.


Jasper is quite cunning. He is somewhat embarrassed about his long neck, feeling the need to cover it up whenever he can. He also drinks a lot.

Abilities and Powers

Physical Abilities

Jasper has displayed impressive physical strength.

Devil Fruit

Jasper ate the Mythical Zoan-type Hebi Hebi no Mi, Model: Ouroboros.


Jasper is proficient in Busoshoku and Kenbunshoku Haki.


Jasper keeps a pistol in his sheath.


  • Jasper's name in Japanese contains jya (ジャ), another reading of the kanji for snake, 蛇.
    • Another reading of jya in the context of the aforementioned kanji is "heavy drinker", one aspect of Jasper's character.
  • Mercury is an important element in alchemy, which the ouroboros sometimes represents.