Here are the character profiles.
Sebastian Michaelis (塞巴斯蒂安-米卡艾利斯/锡巴查恩-米卡艾利斯<港译>)/ Sebastian Michaelis
The protagonist of the story. Deacon of the Fadom Highway house. Made a pact with the Shire. His true identity is that of a demon, having appeared in his original form in the darkness when he contracted with Char in the 1st story, and part of Sebastian's original form as a demon has been revealed in the final TV-1 story and the manga: red pupils, pointy teeth, black pointy fingernails, long black hair, a black cape, and spiked heeled high heels. Human attacks are ineffective against him. On the back of his left hand, there is a contract pattern similar to the purple five-star symbol in Char's right eye. "Sebastian" is the name of the dog Char had when he was a child.
Being 186cm tall, his character, training, knowledge, and appearance all give the impression of perfection, and his personality is dark, making him a truly perfect deacon. Sometimes on the surface did not come out to scold, but in his heart give each other poisonous comments. Often helps gardeners, maids and cooks to clean up after themselves. Loves cats and pressing the meatballs on their palms. (It is revealed in the manga that because there are cats on earth but not in the demon realm, he occasionally thinks life on earth is good. Pressing the meatballs on a cat's palm has a fatigue-eliminating effect on Sebastian. (Side note: Char's face has the same effect.) He was called a cat-obsessed by Char in TV-2 episode 3 because he was obsessed with the sight of a cat, and loves cats for their temperamental demonic personality, and hates dogs because they are too docile for their masters. In the manga, he revealed that the thing he was most upset about was "not being able to keep a cat in the mansion" because Char was allergic to cat hair.
Sebastian is nicknamed 384 because the word "Sebastian" means "384" in Japanese, and "Sebastian" and "Sebastian Sauce" in Japanese. In addition, in Japanese, "Sebastian" and "Sebastian Sauce" have the same sound, so it is called "Sebastian Sauce" by the Shinigami Greer.
TV-2 Final Episode
In the end, Char became a demon, (Alois Transy's last wish was that neither Sebastian nor Claude could devour Char's soul, and that Char would be resurrected as a demon) failed to devour Char's soul, and left, holding him in his arms due to Char's command to "go to a place where humans and demons are equal". I'm nothing but a deacon / I'm the demon deacon.
2. "How can you be a deacon of the Vandome Highway house without that?"
3. "Yes,my lord."
4. I will be your deacon for as long as I live.
5.Excessive sanctity is often more malignant than the devil.
6. I will follow you wherever you go, forever.
7. Even if my body is destroyed, I will never leave your side, together until hell reaches its end.
Here is the information about the work.
Black Butler (English: Black Butler) is a Japanese manga serialized from the October 2006 issue of the monthly magazine GFantasy, the tv version of which has aired since October 2, 2008, and the first season of the tv version has been completed, **** with 24 episodes. Is the Japanese cartoonist pivotal beam also in the girls to the magazine "monthly G FANTASY (monthly Gファンタジー)" serialized manga works, China's "new point of view" and "anime front" and other magazines have done or serialized, "COMIC new point of view" has introduced this work. While many manga artists have been moving towards weird styles, Hub Liang's drawing style is quite orthodox in the Mimoru school. The slender skeleton of a teenager, the slender body of a young man, together with the gorgeous costumes, soft glossy hair and characteristic weird and gorgeous style, and the rich British flavor, bring great visual enjoyment to the audience.
Excerpted from Baidu Encyclopedia Search "black deacon"