About Doku Doku no Mi
The Doku Doku no Mi is a Paramecia-type Devil Fruit that grants the user the ability to produce and control all different types of poison, as well as absolute immunity to it, making him or her a Poison Human (毒人間, Doku Ningen?, Viz: "Poisonous Human", Funimation: "Poison Man"). It was eaten by Magellan.
This ability is not to be confused with a Logia-type power, as the user cannot transform their body into poison.
This Devil Fruit power allows the user to create and control a wide range of poisons that can vary in strength and form, ranging from a mild irritant to a strong paralyzing agent, to a deadly and highly-corrosive toxin. The user can produce these poisons in both liquid and gaseous states. The user also acquires total immunity from toxins, either created by the Fruit itself or external.