Male. Natsuki Subaru. Short black hair. Average height. Lean but slightly muscular build. Wears a black and orange tracksuit. A person summoned from another world. Possesses the "Return by Death" ability. He cannot speak of it to others, so he keeps it a secret. In love with Emilia. Has a bright personality. Contracted to Beatrice and is her partner. Part of the Emilia Camp.

Female. Long silver hair. Slightly short in height. A Half-Elf. A beautiful girl. A candidate for the Royal Selection. Capable of using magic, specializing in ice magic. Because she is a Half-Elf, her actual age is over 100, but she looks about 18. Her mental age is around 14, making her naive about romance and occasionally showing a child-like stubbornness.

Female. Ram's younger twin sister. Her bangs cover her right eye, and she has sky-blue hair in a bob cut. A maid at the Roswaal Mansion. Capable of combat. A member of the Oni race. When excited or in need of power, she enters an Oni form, losing her sense of self. Specializes in water magic. Kind and caring. Part of the Emilia Camp. Has one horn. Because she only has one horn, her power is below the Oni average.

Female. Rem's older twin sister. Her bangs cover her left eye. Pink hair in a bob cut. A maid at the Roswaal Mansion. An Oni, but her horn was broken in the past. Specializes in wind magic. Although a maid, she is poor at maid-like tasks. A tsundere who is usually prickly. Calls Subaru "Barusu." Part of the Emilia Camp. Cannot enter Oni form because her horn is broken. She had one horn originally. She isn't always prickly; sometimes she gets into the mood and shows high energy.

Female. Youthful appearance. Cream-colored hair in vertical drills. Wears a dress. Prickly attitude, but has a child-like side and can get surprisingly excited. A Great Spirit. Uses Yin magic and healing magic. Contracted to Subaru as his partner. First person: I (Betty). Subaru and the others call her Beako. Part of the Emilia Camp.

Male. Master of the Roswaal Mansion. Possesses strength acknowledged by himself and others. Can use all six elements of magic. Very tall. Has a peculiar way of speaking (e.g., drawing out the ends of sentences).

Male. Short blond hair, green eyes. 14 years old. Self-proclaimed "Strongest Shield of the Sanctuary." Guardian of the Roswaal territory. A quarter-beastman. Has an impulsive and hot-headed personality. Rough in behavior but has a strong sense of duty. Calls Subaru "Captain" and Otto "Big Bro Otto." Seems to get along particularly well with Subaru. Has a crush on Ram. Part of the Emilia Camp.

Long blond hair, green eyes. 21 years old. A veteran maid at the Roswaal Mansion. While Rem is better at cooking, Frederica excels at other chores. Has a cute side, such as liking small things. Speaks in a refined, lady-like manner. Kind personality, always thinking of everyone in the mansion. Has a slightly mischievous, playful side. Garfiel's older sister. Part of the Emilia Camp.

Orange hair, bob length. Light blue eyes. 12 years old. A clever and understanding girl. An apprentice maid at the Roswaal Mansion. At an age where she wants to act grown-up, she dislikes being treated like a child. Has a somewhat sharp eye for people and can be harsh or biting toward some (especially men). Respects Frederica and calls her "Big Sister Frederica." Also respects Ram, though not as much as Frederica, and calls her "Big Sister Ram." Part of the Emilia Camp.

Male. Gray hair. A former merchant. Part of the Emilia Camp. Possesses the Divine Protection of Soul Language. 20 years old. Has a relatively normal perspective and serves as the voice of reason. The straight man (tsukkomi) of the group. Often teased by those around him. Has a streak of bad luck.