Pandora Hearts said: Cheshire is a special chain like Alice and needs no contractor to survive. He makes his first appearance when he drags Alice and Break into his dimension, which is actually made from Alice’s memories. When fighting, Cheshire uses its large claws to slash through the enemy and he has a long piece of fabric which he uses to teleport.
It is revealed that he is actually Alice's cat from 100 years ago. Vincent gorged out his eyes while he was still just a cat, which he later replaced with one of Break's.