Ciel Phantomhive is the most powerful boy in England,but he bears the scars of a painful past. The boy makes a contract with a demon butler whom yearns for Ciel's soul but not until the contract is fulfilled is that the demon will finally get to feast.
In the devilish Butler whom Ciel brought back one day he is called Ciels shadow since is always around Ciel
He is incredibly talented for a butler and is fond of cats.
Nobody really know what goes through this butlers mind the only clues are the trademark smile he always has on his face when he is amused.
Sebastian wear gloves that cover the contract that is located on his hand its what binds Ciel and Sebastian.
Sebastian is quite a capable demon able to do almost anything if his master commands it. There are times when he twists his masters orders in his favor.
Ciel is a very strict and proud character, with a general cold outlook on life. As proud as he is, his main goal in life is for those who have betrayed the Phantomhive family to experience the same level of humiliation and suffering he did.
Ciel often finds it entertaining to challenge Sebastian, whether in the areas of strength or skill. Nonetheless, he and Sebastian work together often, and only his butler seems to be aware and knowledgeable of Ciel's schemes and plans, in contrast to the other Phantomhive servants.
Sebastian has noted that Ciel is arrogant and overly confident in his skills to the extent that he has the viewpoint of 'there is no way I can ever lose'. Therefore, there are still some childish traits in Ciel that would need to be corrected by the adult he respects.
Ciel is always wearing a black eye patch to cover up the mark that connects him to Sebastian