Niji Niji no Mi (Ruki)

Niji Niji no Mi (Rainbow Rainbow Fruit) is a Logia-type Devil Fruit which bestows upon its consumer the ability to materialize, manipulate, and or metamorphose into Nijiiro (Rainbow Color Particles). It was eaten by Felix Blackburne.

Functions of the Nijiiro
The Nijiiro Particles are absurdly complex particles that are known to sporadically accumulate within the air and react with water vapor to form the rainbow mist.

Advantages
The fruit's major strength like other Logia types is that it allows the user to produce as well as become the element they control. In this case, Felix is able to create, control, and become Niji Particles. He is also able to teleport them selves or something else, as well as trap people or objects inside of Apes Concert, another dimension that can be accessed by the Rainbow Mist. The Particles can also be used as a blunt weapon, hitting enemies with great strength.

The consumer also gains the ability to cut through anything as well as punch through anything. The consumer can seemingly "nullify" devil fruit abilities, however this is not true. Felix simply teleports the ability or move into Ape's concert. Felix also gains the ability to seemingly teleports, whereas he is only stepping in and out of the dimension.

He can also send his attacks through a wormhole, appearing next to or near his opponent. If he and is opponent are surrounded by the rainbow mist, he can send their attacks back at them, by teleporting that part of the body through the dimension, and out of it, thus sending the attack they sent at them.

Felix has come up with a method for Busoshoku Haki users. He teleports one part of his body to another dimension as they make contact creating a phase effect. Though when he does this, he cannot attack until be stops this.

Disadvantages
The main weakness of this fruit, is that the power cannot be utilized unless there is water vapor around, besides this Felix is susceptible to the standard devil fruit weaknesses.