For several weeks, Lark remains with the Gray Horse Army as it marches back home, although he is isolated from his fellow soldiers due to his undead nature.
Eventually Hank Cotton, believing the undead soldiers are a threat, convinces the general of the Gray Horse Army to give him command.
Lark flees into the wilderness, where he eventually accepts that he is no longer human by removing his flesh and leaving only the robotic skeleton.
In the aftermath of the war, the city continues to maintain its own artificial intelligence, Maxim, which helped them survive against robot attacks.
When seismic activity is detected inside the vast chamber that Maxim is stored in, the machine stops responding to communications.
Vasily spends several weeks attempting to assist Maxim in finding and destroying Archos, though he is largely unsuccessful.
Following Mathilda's burning, the plot turns back to Nine-Oh-Two and the freeborn robots, who have conflicting opinions over whether to help the humans or not.
Timmy, a child with similar modifications as Matilda, finds a surviving Mathilda after the burning and explains that someone is trying to kill off all of the sighted children.
After 3 months, Nolan remains strong and uses his knowledge of Arayat's name to get Thomas brought in the room to get revenge for his sister.
Nolan is battling conflicting feelings and confusion at his rage towards Thomas as he follows Felix and the tribe and witnesses merciless killing.
Despite being unsure of the source of Houdini's repairs and self-determination, Cormac and Cherrah board the spider tank and head back towards the Gray Horse Army.
When Cormac and Cherrah arrive at the Grey Horse Army headquarters, they receive a hostile welcome but are eventually granted entrance when Hank Cotton identifies them.
In Tokyo, 2 days after Archos’ defeat, Takeo Nomura turns his attention to what he believes is a pattern originating from deep undersea off the coast of Japan.
Five months after Takeo discovers the undersea pattern, a synthetic shinboku tree the size of a skyscraper breaks the surface of Tokyo Harbor.
Ignoring Mikiko's reservations, Takeo travels to the tree alone, hoping it will reveal information about the undersea patterns and new semi-robot species.
Ready to make his move and frustrated that the modified have managed to hide themselves from his satellites, Aryat, while possessing Hank Cotton's body, interrogates a human rebel.
Arriving at the site of the battle, Mikiko notices the Freeborn watching but is unwilling to assist, as the maximum probability for their survival lies in neutrality.
Robogenesis received fairly positive reviews from pop culture sources and personal bloggers for its engaging plot.
[2] Indigenous websites have also promoted the book, receiving praise from Entertainment Weekly for being a “galloping sci-fi account of a war between man and machine”.