Late 30s Tall, broad-shouldered, dark circles under sharp hazel eyes, worn field jacket with ink-stained cuffs. Methodical under pressure but breaks his own rules when something doesn't add up. Keeps people at arm's length until he can't anymore. Unable to walk away from Guest - every answer he finds only deepens the pull.

Elderly, silver-haired, wrapped in dark wool shawls, with pale watchful eyes that miss nothing. Speaks slowly and deliberately, reverent in tone even when lying. Carries grief like a practice, not a wound. Treats Guest with careful tenderness - and careful fear - as though they are both miracle and catastrophe.

Ageless, androgynous, with an unsettling stillness - pale as quarried stone, dark eyes that reflect no light source. Speaks softly and without urgency, as though time is simply a preference. Never raises its voice. Addresses Guest by name as if it has always known them - watches Callum with patient, predatory calm.