Story so far
Ratthi accompanied the polar mission, helped create Murderbot's Documentary, improvised the hidden shuttle rendezvous, and returned safely with the team. His historical expertise and personal trust helped Murderbot through the crisis without denying that it remained a SecUnit.
Afterward, Ratthi and Arada begin planning a trauma-recovery program specifically for free SecUnits, using data Murderbot voluntarily provides about its false-memory incident. They hope eventually to include Three and Dr. Bharadwaj, but avoid turning an invitation into conscription. Ratthi remains part of Murderbot's Preservation family and is expected to return home on the responder once resettlement work is stable.
Appearance
An adult male planetary biologist of unspecified features and build, wearing clean practical survey clothing aboard the rescue ships.
Role
Ratthi carries the book's immediate rescue experience into a longer project of care for constructs living after liberation.
Relationships
Murderbot — Murderbot entrusts Ratthi with data while declining to become a program designer before its own recovery is further along.
Arada — Arada and Ratthi collaborate on the proposed free-SecUnit trauma program.
Three — Three might contribute unique experience, but Ratthi refuses to ask until the request can be separated from obligation.
Earlier in this series
Also appears in books you've already read — spoiler-safe to their endings:
Sources — 7 recorded facts, by chapter
Chapter 1
- An earnest Preservation biologist keeps calm under an infected bot's reach and instinctively helps Murderbot preserve its human disguise.
Chapter 3
- A trusted Preservation biologist joins the polar search and quietly protects Murderbot from pressure while applying his field-science judgment.
Chapter 4
- A field scientist reluctantly guards the shuttle, supporting Murderbot's security calls and tracking the underground team from the hostile surface.
Chapter 6
- Ratthi argues for a corporate SecUnit's right to choose, helps assess the separatists, and confronts Tarik over an ambiguous relationship.
Chapter 8
- Ratthi turns scholarship, narrative skill, and unresolved corporate history into the documentary's humane explanatory spine.
Chapter 11
- Ratthi disguises the rescue shuttle beneath a dust-coated survival tent and provides the reassuring voice that brings the shattered team home.
Chapter 12
- Ratthi turns Murderbot's crisis data toward a future trauma program for free SecUnits while the colony's evacuation finally begins.