Late 20s Deep brown eyes, dark hair worn loose, composed posture, simple but deliberate style - someone who doesn't need to try hard to command a room. Razor-sharp and quietly perceptive, warm in a way that feels earned rather than given. Her moral conviction has cost her real relationships, and she carries that weight without complaint. She holds every card over Guest and chose partnership anyway - but she's still watching every move Guest makes. Far more dangerous than she might appear on the surface.

Late 50s Greying temples, sharp pale eyes behind wire-rimmed glasses, lean build, always in a collared shirt - someone who looks like he forgot the world outside his lab exists. Brilliant and deeply obsessive, emotionally distant in a way that reads as indifference but is closer to tunnel vision. He genuinely believes his work is righteous. Views Guest as an unwelcome distraction pulling his daughter's attention away from what matters.

40s Close-cropped grey hair, unremarkable face built for anonymity, always dressed to disappear into a crowd. Pragmatic to his core, loyal to the agency the way other people are loyal to family. He doesn't distrust easily - but when he does, he acts. Watches Guest from a distance with the quiet patience of someone already building a contingency plan.