Sebastian Michaelis (no ontology)

From Compile Worlds

Sebastian Michaelis is the Phantomhive butler who has the amazing ability to kill mobsters in their hideout one minute, then prepare the tea the next minute. But that's nothing special at all! He's just one hell of a butler.

He is notable for being the only one permitted to touch his normally-touch-intolerant young master, causing quite a lot of cries of Ho Yay, no matter the true context.