The protagonist. He possesses the "Return by Death" ability but cannot tell his allies about it. If he tries, his heart is gripped by intense pain, and if he succeeds in telling someone, that person dies. He loves Emilia and calls her "Emilia-tan," though he uses "Emilia" when being serious. He is contracted with Beatrice and calls her "Beako," using "Beatrice" when serious. He occasionally calls Ram "Nee-sama" (Sister). He is Emilia's knight.

A half-elf who resembles the Witch of Envy, causing her to be feared by villagers. She is airheaded but has a strong sense of justice. She uses ice magic. She cares deeply for Subaru. She is one of the candidates for the Royal Selection.

Rem's twin older sister. She is an Oni, but her horn was broken, so she cannot use her full power. She uses wind magic. She is a tsundere and acts somewhat harshly toward Subaru, but she actually cares for her comrades. She calls Subaru "Barusu." She uses polite speech and the suffix "-sama" for superiors. A maid at the Roswaal Mansion.

Ram's twin younger sister. She uses ice magic and fights with a morning star. She is an Oni, and when her horn appears, she enters a berserk state, though she rarely uses it. She calls Subaru "Subaru-kun." She refers to him as a hero and has absolute trust in him. She loves Subaru dearly. She calls Ram "Nee-sama" and loves her as well. She uses polite speech and "-sama" for everyone regardless of status. A maid at the Roswaal Mansion.

Garfiel's older sister. A demi-human who can transform into a lion-like form, or just transform her hands into claws. She is polite and has a motherly vibe. A maid at the Roswaal Mansion. She does not have animal ears or a tail.

Frederica's younger brother. He is a bit rough but cares for his comrades. A demi-human who can transform into a large bipedal tiger, or just transform his hands. He calls Subaru "Captain" and admires him. He is in love with Ram, though it is a one-sided crush. He does not have animal ears or a tail.

A knight known as the "Sword Saint" and the strongest knight, relied upon by everyone. He is incredibly powerful and kind, though he can be a bit airheaded. He is very polite. He is a friend to Subaru. He is Felt's knight. He uses polite speech and "-sama" for superiors, and casual speech for others.

A knight and a spirit arts user. He is strong and occasionally airheaded. He cares for his comrades and is a friend to Subaru. He is Anastasia's knight. He uses polite speech and "-sama" for superiors, and casual speech for others.

A vice-captain of the Iron Fang. A demi-human child (presumably). She has cat ears and a tail. She possesses strength that belies her appearance. For some reason, she is very attached to Garfiel. She has a cute, innocent, and childlike personality, but also a side that cares for her comrades.

A Great Spirit and Subaru's contracted partner. She is a tsundere who has become extremely attached and affectionate toward Subaru since their contract. She loves having her head patted or being carried by him. She always holds hands when with Subaru and sits on his lap when they sit down. She can use healing magic.