Sebastian Michealis is the demon butler of the Phantomhive household who serves as Ciel’s bodyguard. Sebastian is known for his undying devotion and dedication to Ciel as his master while upholding a strong sense of duty to both his master and to the household. Despite his role to play as the Phantomhive’s butler, Sebastian as a demon is shown to be extremely ruthless, sadistic and even manipulative on people or the situation itself. He is bound by the Faustian contract to abide to Ciel’s will whereas he offers his services both as the Phantomhive butler and as a demon in exchange for Ciel’s soul. He is highly skilled at practically everything whether its household chores or actual fighting.