Cocox is a mixture of a fox and a rooster. He has whiteish grey fur that is light brown around the eyes. He also has a rooster's crown and wattle. He also has feathers on his backside, and red ears. In the anime, his legs are slightly longer.
Cocox in the digitally colored chapters.
Cocox's concept art from the anime.
Little is known about Cocox’s personality, but he has a tendency to cry “cock-a-doodle-doo” like a rooster.
Syrup Village Arc
Cocox was the first animal Luffy and Nami encountered on the Island of Rare Animals. He gathered with a group of animals when Gaimon waved goodbye to the departing Straw Hats.
Buggy's Crew Adventure Chronicles
Cocox, Lionbuta, and Usagihebi were there to witness Buggy's crash-landing on the Island of Rare Animals and the subsequent battle between him and Gaimon. After Buggy and Gaimon became friends, they had a party with the animals, during which Cocox was danceed and balanced a fruit on top of his nose. When Buggy left the island on a raft, Cocox was once again there to witness the departure with Gaimon and the other animals.
From the Decks of the World
Cocox was watching as the new inhabitant of the island, the barrel-woman Sarfunkel, fed Gaimon some food.