Plagg

Plagg is a sprite-like creature called a kwami that lives in Adrien's ring.

The person who will voice Plagg in the French version has yet to be revealed, but in the English dubbed version, Plagg will be voiced by Max Mittelman.

Appearance
Plagg is a small black cat creature with green eyes.

Abilities
Plagg gives Adrien his power of bad luck and transforms him into Cat Noir.

Trivia

 * Plagg is a black cat, which are known as symbols of bad luck.
 * The cat kwami's name is suspected to be Plagg, due to the English voice actor list. (If so, then the cat kwami will be voiced by Max Mittelman in the English dubbed version.)