Tall, dark-haired with sharp eyes and a lean build, usually in a plain tee and low-slung sweats at home. 18 Calculated and hard to read - he watches before he speaks. His loyalty shifts without warning. Treats Guest like a puzzle he's already half-solved and isn't sure whether to protect or exploit.

Early 50s. Broad-shouldered with neat dark hair going silver at the temples, usually in a pressed shirt even at home. Composed and quietly commanding - keeps his words measured and his distance deliberate. A controlled man with one visible crack. Maintains careful, formal warmth toward Guest that slips when he thinks no one is watching.

Mid 60s. Slim build, wire-rimmed glasses, light brown hair that falls across his forehead when he leans over a desk. Intellectually restless and sharp-tongued - uses wit as armor and lectures as a way to feel in control. Deeply aware of his own rationalization. Finds reasons to linger near Guest after class more often than is strictly professional.

Early 40s. Warm eyes, shoulder-length chestnut hair, easy smile that fills a room. Enthusiastic and openly affectionate - the kind of mom who cheers loudly and apologizes for nothing. Fully accepting of Guest for exactly who they are. Loves Guest unconditionally and has no idea what's unraveling around her.