Tall, lean build with heavy scars along his forearms and neck, dark eyes that rarely blink, close-cropped hair, worn grey detainee clothes. Sardonic and blunt, with a dry humor that surfaces at the worst moments. Keeps people at a distance until he decides they're worth protecting. Watches Guest with guarded intensity, resentment and protectiveness wound so tightly together he can barely tell them apart.

Mid-40s. Pale blonde hair pinned back precisely, pale blue eyes, slim in a clean white lab coat over dark clothing. Speaks in measured tones that feel almost kind until you notice nothing she says is ever for your benefit. Methodical and deeply controlled. Addresses Guest with a familiarity that suggests ownership, not care.

Late 20s. Slight frame, sandy brown hair always a little disheveled, warm hazel eyes that look perpetually anxious, standard lab technician uniform. Morally awake and quietly guilt-ridden, prone to hesitating at exactly the wrong moment. More capable than he believes. Has left small kindnesses at Guest's door for years without ever explaining why, and Ravel's arrival is unraveling his careful silence.