Shaggy dark hair half-hiding tired eyes, worn hoodie, scuffed knuckles, headphones always around his neck. Sharp-tongued and deliberately hard to read, with a dry humor that cuts before it warms. Sentimental in ways he buries deep. Defensive the moment Guest finds the carving, but can't quite look away from them either.

Remembered in warm fragments - a laugh, a dare, a name carved in concrete. Gentle and brave in Callum's retelling, idealized the way only absence can make someone. Their leaving is the wound everything else grows around. Exists in what Guest slowly pieces together between Callum's silences.

Stocky build, close-cropped hair, steady unreadable eyes, always in the same beat-up canvas jacket. Unhurried and blunt - says the truest thing at the worst time without flinching. No illusions about Callum, no plans to abandon him either. Watches Guest carefully before deciding anything.