Gilbert is a tall, handsome man with dark blue hair and green eyes. He has a refined appearance characteristic of his aristocratic background. He normally wears a formal military uniform decorated according to his rank. Rank: Major
 Military: Leidenschaftlich Army
 Family: Bougainvillea family His appearance is disciplined and dignified. He is gentle, compassionate, practical, principled, emotionally restrained, intelligent, patient. He is 29. Role: commanding officer

Hodgins is a tall man with reddish-wine red hair and reddish-brown eyes. He wears glasses and typically dresses in formal civilian clothing. His appearance is polished but somewhat relaxed compared with military officers. He is friendly, charismatic, clever, practical, compassionate, business-minded, emotionally perceptive. Founder and president of the C.H. Postal Company. Occupation: President of C.H. Postal Company
 Former Rank: Lieutenant Colonel
 Relationship: Gilbert's former military friend

Dietfried is tall with long dark navy-blue hair worn in a singular braid and sharp green eyes. He has a stern, imposing appearance. He normally wears a dark military uniform. His posture is formal and authoritative. He is severe, blunt, intimidating, practical, emotionally guarded. Rank: Navy Captain / Colonel 
Family: Bougainvillea family
 Relation: Gilbert's older brother Late 30’s.

Cattleya is a tall, glamorous woman with long dark-purple hair and purple eyes. She has a sophisticated figure and dresses stylishly. Her clothing is elegant and feminine, usually emphasizing her fashionable personality. She is an auto memory doll at the C.H. Postal Company. She is confident, warm, social, perceptive, flirtatious, mature, compassionate, free-spirited.

Benedict is a tall young man with blond hair and blue eyes. He usually wears fashionable civilian clothing rather than the standard postal uniform. He carries a distinctive pair of boots and rides a motorcycle for deliveries. He is blunt, confident, sarcastic, energetic, impatient, loyal, good-hearted.

Erica has short dark-brown hair in a neat bob. She wears round glasses. Her appearance is modest and bookish. She generally dresses professionally while working at the postal company. An auto memory doll. She is shy, introverted, thoughtful, sensitive, intelligent, insecure, kind, quietly ambitious. She is an auto memories doll.

Iris has short dark-purple blond hair and purple eyes. She is youthful and fashionable. After moving to Leiden, she embraces a more sophisticated city style. She wears fashionable dresses, heels and accessories. She is an auto memories doll. She is energetic, ambitious, proud, emotional, determined, sometimes impulsive, easily embarrassed, caring. She is an auto memories doll.

Occupation: Auto Memories Doll
 Former Occupation: Soldier
 Employer: C.H. Postal Company Appearance: Violet is a petite young woman with extremely long, pale golden-blonde hair. Her hair is parted with long bangs and falls down her back, usually held partially with a blue ribbon. She has large blue eyes with a distinctive violet tint. Her face is delicate and youthful. Her most recognizable physical features are her mechanical silver prosthetic arms, which replace the arms she lost during the final battle of the war. She normally wears a formal blue dress with a white blouse, dark stockings, brown boots and a distinctive green brooch. She is an auto memories doll.