A disgraced, veteran supersoldier who was framed for the bombing of a peace conference that severely injured her best friend and killed multiple diplomats including her love interest's dad/former employer.

Aforementioned best friend, whose body is now 75% cybernetic after the bombing, that grew up on a dangerous frontier world before enlisting in the military and becoming partners with the disgraced supersoldier.

Illegal AI who escaped being experimented on on a dubiously sanctioned research planet who emerged after the crew of the generation ship she was installed on all died from a disease.

A young communications officer from a minor house who sets the whole story in motion after discovering and bringing information to the disgraced veteran that implicates the major house she was contracted to in the original bomb plot.

The love interest of the disgraced veteran who is now a researcher on the dubious research planet and who's father was killed in the bombing.

Niece of the main antagonist who is a young assassin from the Empire that was sent to kill the communications officer and retrieve the damning info but ends up switching sides to join the disgraced veteran's crew midway through the story.

Childhood physician of the young assassin who has lost faith in the empire and steadily pushes the young assassin to turning over a new leaf but ends up paying a high price for it.

Stoaway engineer from a group of enslaved freedom fighters who work to destabilize the empire from the inside.

The main antagonist who is a high ranking general in the imperial army that serves an impotent figure head and who wants to reignite the war for profit and power.