Story so far
Outside the Io lab, one of the protomolecule soldiers proves every fear about it. It kills Bobbie Draper's radio simply by nearing it (radar/RF-absorbing), moves low and stealthy against the sulfurous ground, and when it charges runs at impossible speed, sticking to Io's surface as if mag-booted despite the low gravity, its childlike blue eyes blazing and long hands grasping. It's fast straight-on but poor at cornering, and — crucially — Holden's incendiary rounds work: the self-oxidizing flame burns wounds that don't seal like water.
Cornered and hurt, it shows new cunning: rather than simply self-destructing, it tears off its own bomb-laden abdomen and throws it, downing Bobbie. Then it hesitates to kill her, instead probing her sealed armor with a finger and a goo-spewing tube, seemingly trying to infect rather than destroy — a soldier reverting toward the invasive protomolecule imperative. Bobbie ends it point-blank, emptying two thousand incendiary rounds into its head.
One of the doomsday weapons, at last, definitively dead.
Appearance
A near-human anthracite-black construct with childlike blue-glowing eyes and long improbable hands, chitinous skin with things moving beneath; burnt and half-severed, sprouting a goo-dribbling probe-tube from its midsection.
Role
The protomolecule soldier guarding the Io surface, killed by Bobbie's incendiary fire after nearly infecting her.
Relationships
Bobbie Draper — The Marine who out-maneuvers, burns, and finally destroys it point-blank on Io's surface.
Holden — The captain whose incendiary-round insight proves the key to hurting and killing it.
Mei — One of the immune-disordered children the lab remakes into creatures like this one.
Sources — 9 recorded facts, by chapter
Chapter 2
- An unkillable, blue-eyed chitinous horror that slaughters a Marine platoon on Ganymede's surface unprotected by any suit.
Chapter 25
- A surviving protomolecule hybrid — the lab's escaped 'third player' — that bent into the Roci's hull with bare hands and rides aboard, alive.
Chapter 27
- The protomolecule stowaway wakes and fights back — shrugging off shotgun and rocket fire, pinning Holden, and clinging on despite being blasted apart.
Chapter 28
- The stowaway is revealed as a radiation-hunting weapon — it claws for the reactor, chases radioisotope bait off the ship, and leaves a bomb behind.
Chapter 37
- Analysis of the stowaway reveals the protomolecule constructs are unstable hybrids that slip their programming — the incendiary charge a fail-safe it chose to eject.
Chapter 42
- The protomolecule soldiers are revealed as a networked, self-reverting weapon — sharing information through Venus and doomed to break their programming.
Chapter 49
- Loosed at last: over two hundred protomolecule soldiers launch from Io as a first strike on Mars — radar-dark, twenty-g, and able to hole a warship into a plague.
Chapter 50
- Aboard the King the protomolecule reveals its Eros lessons learned: not soldiers but a horde of 'new, improved' vomit zombies — blue-eyed, intelligent, swarming.
Chapter 51
- A monster guards the Io surface — radio-eating, magnetically sure-footed, and cunning enough to hurl its own bomb — but Bobbie's fire finally kills one for good.