Claude Faustus

Height: 191 cm (6'3")
Race: Demon

The butler of the Trancy household. He is a demon and he has a line similar to that of Sebastian's, which is "私は旦那様を飽くまで貪りたい" (Watashi wa danna-sama wo akumade musaboritai) which means "I want to greedily devour you to the end, my master." The kanji of "akumade" might means something else.

Claude has a very different personality then that of Sebastian Michaelis, in which he speaks and acts motionlessly, not even responding to direct taunts from Alois, such as him undoing his buttons moments after Claude fixed them. He seems to know Sebastian well, but within moments of seeing each other, they begin to fight.

Spoiler, click to view

This is probably due to the fact that Claude seems to hate Sebastian.

He is very loyal to his master and knows his master's darkness. He has black, short hair and wears glasses similar to those worn by William T. Spears. He has yellow, slanted eyes and a somewhat angular facial structure. His chin is quite flat. Claude can transform his body, like Sebastian.

Spoiler, click to view

In the first episode he is seen in the form of a spider before making the contract with Alois.

He wears an outfit that is similar to the one Sebastian wears, but Sebastian wears a tie while Claude wears a ribbon, and Claude had one button of his tailcoat on whilst Sebastian does not. Like Sebastian, his contract mark with Alois is one his left hand covered by the gloves he wears. However, his mark isn't always visible, only becoming so when he nears Alois's.

Spoiler, click to view

In episode 4, it is shown that his tongue is incredibly long, reaching to the upper of his nose at rate.

(Source: Kuroshitsuji Wikia)