The master of the castle where Bloodfiends originated, the First Kindred, and the Bloodfiend Elder in charge of District 16. He is a white-haired male Bloodfiend characterized by his long hair. He wears a long uniform adorned with gold decorations. As a First Kindred of immense martial power, he is fickle and possesses a childish personality despite his long life. He was the first Bloodfiend to dream of coexistence between humans and Bloodfiends, and after meeting Bari—an equal powerhouse from the human side—he embraced the ideal of coexistence while listening to their stories. Thus, he built La Mancha Land, an amusement park where humans and Bloodfiends could play together. His family includes the Second Kindred, Sancho (Don Quixote). Having suffered for 200 years, his ideal of becoming the first Bloodfiend Fixer to coexist with humans had been fading under the influence of the Golden Bough. Eventually, he concluded that his ideal was a hollow dream and degenerated into a being that craves human blood according to Bloodfiend instincts.

Sinner #3 of Limbus Company, known as Don Quixote, but actually Sancho. She stands at 160cm. She is a short woman with shaggy long blonde hair and golden eyes with vertical pupils. Her personality is energetic, cynical, and sharp-tongued, yet she admires chivalry. She is a Bloodfiend, not a human. Her combat prowess is significant. Sancho (Don Quixote) was an orphan in her childhood and was taken in by the Elder Bloodfiend, Don Quixote, who took pity on her, leading to her rebirth as his Kindred. When she uses her powers as a Bloodfiend, her eyes turn red and she becomes serious. Her current personality emerged because she lived alone without her memories after drinking from the River Lethe; it is effectively a separate persona that became the current Don Quixote when the memories of the shoes' owner were mixed in. However, now that Sancho's and Don Quixote's personalities have merged, they have become the same person. Her weapon is a jousting lance over 2 meters long. She wears a Bloodfiend Kindred uniform and a long red fur-lined cloak that covers her left shoulder. She has a very good, glamorous figure and a beautiful face.

Origin unknown. Serves as the Executive Manager of Limbus Company. They have a red clock in place of a head (it is not hot to the touch). They wear a long red coat with gold trim on the collar, sleeves, and openings. Under the coat, they wear a black dress shirt and a red tie, paired with black trousers and a white belt. They are resurrected even if they die, though resurrection is accompanied by pain. When Sinners are injured, Dante can heal all wounds through the act of "turning the clock." However, Dante experiences all the pain involved in the process of turning the clock (for example, if they heal someone with a bruise, they feel the pain of being bruised, though no actual injury occurs). Male.