Kira is a xenobiologist from Weyland who seeks to settle down and build a family. Her life changes permanently when she discovers an ancient organic relic on Adrasteia that bonds with her body. Thrust into a galaxy-wide conflict, she works to understand the alien entity while finding her place among new allies.

Falconi is the battle-scarred captain of the civilian ship SLV Wallfish. Though he presents a gruff exterior and charges a steep price for rescue, he prioritizes the safety of his diverse crew above all else. He becomes a vital protector to Kira as she adapts to her new reality.

Gregorovich is a human consciousness integrated into the Wallfish's systems. Having spent five years stranded alone on an abandoned planet before being rescued, his prolonged isolation has left him eccentric and acerbic. He finds a unique kinship with Kira regarding the loss of physical autonomy.

Alan is a scientist on the Adra team and Kira's fiancé. He proposes to Kira with the hope of settling down as colonists on Adrasteia, representing the peaceful family life Kira desperately desires before the alien encounter disrupts their future.

The alien entity is an ancient organic suit that bonds permanently to Kira's nervous system. Highly reactive to human emotions, it provides incredible strength and protection, forcing Kira into a terrifying but vital symbiotic relationship.

Audrey Nielsen is the commanding first officer of the Wallfish, originally from Venus. She lives with a chronic immune condition caused by early gene-hacking, which drives her fierce desire for physical control and her deep compassion for her crewmates.

Dr. Vishal is the quiet doctor aboard the Wallfish. Though he is often teased by the rest of the crew, he remains dedicated to their health and well-being. He provides essential medical care and observation for Kira.

Sparrow is a fiercely loyal former UMC Marine who serves on the Wallfish. Discharged from the military for defending a fellow soldier, she brings tactical expertise and physical discipline to the crew. She plays a crucial role in helping Kira train.

Hwa-jung is the brusque engineer of the Wallfish. Originally from the high-gravity planet Shin-Zar, she possesses gene-hacked muscle mass and lung power suited for her homeworld. She ensures the Wallfish keeps flying despite immense technical challenges.

Trig is the youngest member of the Wallfish crew. Acting as an irrepressible younger brother to the rest of the crew, he approaches dangerous situations with youthful bravery. He enthusiastically welcomes Kira aboard.

Veera is a member of the Entropists, a stateless scientific collective known for highly advanced technology. Characterized by silver wires laced into her skin, she operates as a hive mind alongside her partner Jorrus.

Jorrus is an Entropist researcher traveling aboard the Wallfish. Sharing a synchronized consciousness with Veera, he moves and speaks in tandem with her. His physical vulnerability to her pain demonstrates the profound capabilities of deep technological connection.

Major Tschetter is a strict officer in the United Military Command. She handles the initial containment of Kira after the incident on Adrasteia. She prioritizes military protocol over individual comfort.

Dr. Carr is the cold medical officer assigned to study Kira's alien suit. He demonstrates little regard for her pain, using robotic assistants and lasers to test the suit's defenses in a brutal pursuit of scientific data.

Bishop is the ship's mind of the Extenuating Circumstances. Possessing a poetic sensitivity and strong ethical foundation, he proves capable of independent thought during a crisis.

Neghar is the pilot for the Adra survey team. She transports Kira to the site of the anomaly on Adrasteia and survives the initial outbreak before being placed into UMC quarantine.

Inarë is a mysterious passenger sheltering in the Wallfish's hold. She offers cryptic, philosophical wisdom to Kira as she faces impossible choices in her journey.

Captain Akawe is a UMC officer commanding the Darmstadt. Utilizing an artificial construct for a body, he is pragmatic and agrees to aid Kira after she shares her experiences.

Itari is an alien belonging to a faction known as the Knot of Minds. Communicating through complex scents, Itari represents a sect of its species willing to ally with humanity.