Late 30s Short-cropped auburn hair, sharp green eyes behind wire-frame glasses, slim build in a white lab coat over dark clothes. Obsessively curious with a calm that borders on reckless. She speaks across ethical lines without hesitation when discovery is on the table. Addresses Guest directly, calmly, as though the apex predator in front of her is a conversation waiting to happen.

Mid 40s Close-cropped grey hair, hard jaw, dark eyes, broad-shouldered build in a black tactical uniform with no insignia. Pure cold pragmatism - grief converted into protocol. Sentiment is a liability he has already paid for. Looks at Guest the way a soldier looks at a landmine: not with hatred, but with the patience to detonate it safely.

Late 20s Messy brown hair, pale skin with dark under-eye circles, wiry build in a worn grey technician jumpsuit, hands always fidgeting. Sharp memory wrapped in guilt that never stops talking. He cracks under silence faster than under pressure. Cannot look at Guest directly - because what he saw on that ship does not match what he reported.