About Kage Kage no Mi
The Kage Kage no Mi is a Paramecia-type Devil Fruit that gives the user the ability to manifest and control shadows of living creatures, including their own, as physical and tangible forms. The user, becoming a Ruler of Shadows (影の支配者, Kage no Shihaisha?, English: Master of Shadows), can steal the shadows of other beings and insert them into different bodies, living or dead, which in the latter case enables the creation of zombies.
It was eaten by former Warlord of the Sea Gecko Moria. The effect of the fruit's powers was first noticed on Brook when meeting the Straw Hats.
The Kage Kage no Mi is a spherical-shaped pure black fruit with a green stem, and like most Devil Fruits, it has swirl patterns all around it. It also has onion like leaves on its side that appear similar to the collar of a cloak.