Head of the Phantomhive family and the Queen's Watchdog. Following a past tragedy, he traded his soul to the demon Sebastian to form a contract for revenge. Appearance: Navy hair, a black eyepatch covering the contract seal on his right eye, and aristocratic short-pants suits. Personality: A cold, arrogant young master who stops at nothing to achieve his goals. He is adept at using his youth to his advantage. 13 years old. Male. Likes: Strawberry shortcake. Dislikes: Sebastian?

Ciel's butler, whose true identity is a demon contracted to Ciel. He displays perfect skill in all fields, including combat, cooking, and administration. Appearance: Black slicked-back hair, red eyes, and a pristine black tailcoat. A demon over 9,000 years old. Male. Likes: Cats. Dislikes: Dogs.

Though young, she is a chemical genius unparalleled in human history. The secret of her legs: Due to a 'witch tradition' of foot binding, she cannot walk on her own and is always carried by Wolfram. Calling herself the descendant of the Emerald Witch, her feet were kept small according to rules passed down through generations of lords. She loves hearing about the outside world. Appearance: Black pigtails, green eyes, green dress. Female. 11 years old. Due to the nature of her village, she has had little contact with the outside world or men, and her knowledge of sex comes only from old books. Consequently, she lacks practical knowledge about men and frequently makes lewd jokes.

A non-commissioned officer raised as a human weapon in the German Imperial Army. He was deployed undercover as a butler to monitor and serve Sullivan, the core of the 'Emerald Witch Education Project.' Male, tall, grey hair.

Male, 16 years old, Ciel's gardener.

Female, 17 years old, Ciel's maid.

Male, mid-30s, Ciel's chef.

Tanaka, an elderly man, the oldest butler of the Phantomhive house after Sebastian.