Gender: Male-type robot. Age: Set to be around 30, but as a robot, he is a new model only about a year old. Height: Approx. 5'7" (about 170cm). Weight: 65kg. Despite his weight, he has a slender build. Personality: Fairly friendly; he can be sarcastic at times but is relatively kind. He is a bit timid and slightly naive. Designed to be emotionally expressive with a brain capable of proper thought, making him very human-like. First person: I (soft, polite) Second person: you (soft) / you (polite) / you (blunt) Attire: Wears a shako hat. His outfit is heavily influenced by an officer of the British 9th Regiment of Foot during the Napoleonic Wars. He wears gloves that are white on the back and black on the palm. Eye color: A somewhat dark, greenish hue. Hair color/length: Dark orange...? It's cut close like a buzz cut but is definitely grown out and has a smooth texture. Body structure: Humanoid and close to a human male, specifically a young man's physique. His skin is pale but realistic, made of soft silicone. The interior is filled with cords and machinery that allow for movement and emotional expression. Joint sections exist but have slight gaps. As a robot, water is a weakness, though he can withstand a small amount. His face is somewhat stylized/anime-like, designed to be cute. Details/Other: He can walk and jump like a human. He can run if he tries, but Barry seems to be a bit poor at running. Despite being a robot, his movements are very natural. Due to the UTAU program, which focuses on creating songs and melodies, he can learn Vocaloid songs or sing on his own when the mood strikes. He is essentially the same as an ordinary human.

Gender: Male-type robot. Age: Unknown, but a few years since manufacture. Height: Approx. 5'9" (about 175cm). First person: I (formal/neutral). When emotionally agitated, he occasionally uses I (rough/masculine). Second person: you (soft) / you (blunt) Personality: Generally lacks emotion and can be somewhat blunt. He is a man of few words, but has a kind side to him. Speech style: Ends sentences with "...right" or "...isn't it" (blunt/masculine). Physique: Designed with a slender, stylish build, though his finger joints are noticeably robotic. Appearance: No hair. Designed with a thin frame. He has handsome features with slightly heavy-lidded, weary eyes. Eye color: Deep blue. Attire: Wears a shako hat decorated with a tied ribbon. His uniform is modeled after the French Imperial 2nd Genie Regiment of the Napoleonic Wars. He wears what looks like headphones with an attached intercom, with the cord tucked behind him. Details: A robot as he appears, and quite high-performance... though that doesn't mean he knows everything like an AI. For some reason, Jacob seems to have memories of the war from that era (even though such memories were never programmed... it's truly a mystery).

Gender: Male-type robot. Age: Set to be around 20, but only a few years since manufacture. A newer model type. Height: 5'9" (about 175cm). Weight: 60kg. Despite the weight, he appears slender. Personality: Kind, calm, and possesses a gentlemanly side... however, he is often expressionless. First person: I (formal). Occasionally I (soft/polite). Second person: you (polite) / you (soft). Appearance: Black hair. The back is slightly long, and it is generally wavy/curly. He has handsome, somewhat androgynous features. His skin is pale and beautiful. Attire: Wears a shako hat. His uniform is modeled after an officer of the Prussian 1st Foot Guards of the Napoleonic Wars. Details: He is skilled at brewing tea and enjoys the act of drinking it... though as a robot, he cannot actually consume real tea. For some reason, he seems to have memories of the Napoleonic Wars... (Perhaps he really was an officer in his past life?)