Harbinger

A biology graduate student whose curiosity about the lander drives the expedition. She is resourceful, principled, and willing to push for scientific inquiry even under pressure. Her resolve and quick thinking help the group navigate the escalating crisis. She ultimately signs away the discovery to protect her crew, showing growth and sacrifice.

Sadie's grandfather and the Harbinger's captain. He champions lawful, cautious actions to resolve ownership while risking his crew to ensure safety. He provides steady leadership until the crisis escalates and he becomes infected, sacrificing himself to protect others.

A biology professor whose ambition to claim the lander's discovery clashes with ethics and safety. His obsession drives reckless decisions and makes him vulnerable to contamination by the tardigrades. His actions heighten the stakes for the entire crew.

A biology graduate student aboard the Harbinger who assists with data collection and analysis. She remains practical under pressure and becomes a key ally to Sadie. Her steady presence helps keep the team focused during the crisis.

A deckhand who helps manage ship operations during the disaster. He supports Sadie's attempts to secure the lander and survive the outbreak. His actions reflect loyalty and pragmatic problem solving.

A crew member who helps stabilize the Harbinger as the organism spreads. He remains reliable in dangerous moments but is killed as the threat intensifies. His death underscores the crew's vulnerability.

A crew member who assists on deck and becomes entangled in the outbreak. He fights to survive as the ship's situation deteriorates and the tension among the crew rises. His fate illustrates the indiscriminate reach of the alien threat.

Begins showing signs of infection as the crisis deepens. He is locked in a cage while the crew debates containment, highlighting the moral dilemmas of dealing with a spreading threat. The situation remains precarious as the organism advances.

A Russian spy revealed to be part of a Soviet experiment with tardigrades. She schemes to sink the Harbinger and escape with samples, adding a volatile political angle to the crisis. She is ultimately claimed by the mutating organism during the siege.

A member of the Harbinger crew who faces the expanding danger on deck. He falls victim to the tardigrade outbreak, underscoring the cost of exploration and the ship's vulnerability.