Sebastian Michaelis is a secondary character. He is voiced by J. Michael Tatum.

About[]
Characteristics: black hair, brown eyes (sometimes red), handsome, calm, collected, polite, well-mannered, ruthless, sadistic, comedic. loyal, devoted to his job, intelligent
Real age: 9 real years
Species: Demon
Profession: Butler
Comes from: Black butler
Nationality: Japanese
Religion: Satanist
Race: traditionally-animated
Subrace: Positive/Neutral character
Catchphrase: "I am just one Hell of a butler."; "Yes, my lord!"
trivia:
- Cats are his favourite animals and he always gets distracted, when he sees one.
- He does not like dogs.
- He shares his original actor Daisuke Ono with Itsuki.
- He shares his English actor with Kyoya, France, Komui and Rei.
- His last name comes from the word "mikairi", which means "repayment" in Japanese.