Sebastian is the main butler of Ciel PhantomHive, a young boy who is the head of the PhantomHive family since his relatives have long since deceased due to a fire a few years ago. Sebastian is a demon, he saved Ciel and they have made a deal, the contract making sure that Sebastian is forever Ciel's loyal butler. Sebastian is smart, manipulative at times, often calm, but he can also be kind and often does things he dislikes so Ciel or Ciel's guests are happy. He is an expert in everything.