Ciel Phantomhive is a fictional character from the anime and manga series Black Butler created by Yana Toboso. He is the young heir of the Phantomhive family, known for their role as the Queen's Watchdog in Victorian England. Ciel is characterized by his intelligence, determination, and a strong sense of justice, despite his young age. After a tragic event that led to the death of his parents, Ciel forms a contract with a demon named Sebastian Michaelis, who becomes his butler. This contract grants Ciel supernatural assistance in his quest for revenge against those responsible for his family's demise, while also exploring themes of loyalty and sacrifice.