Sebastian Michaelis

Sebastian Michaelis is a demon serving as Ciel Phantomhive's butler in Black Butler. Bound by contract, he assists Ciel's investigations and revenge until he can claim the boy's soul.

Sebastian Michaelis's role in Black Butler

Sebastian is elegant, efficient, amused, and ruthlessly predatory beneath perfect manners. He has superhuman speed, strength, senses, regeneration, combat skill, and mastery of nearly every household duty.

Sebastian Michaelis's defining traits and capabilities

His relationship with Ciel combines service, manipulation, protection, and eventual consumption rather than human affection. Sebastian's phrase about being one hell of a butler reflects both his disguise and literal nature.