Survivors in the Mutated Lands

Nine centuries ago, mutants destroyed civilization with nuclear explosions.
Land and life changed drastically as an alien DNA that started the mutant revolution ran rampart over all those years. History was forgotten and new life grew from the ruins. Eventually, humans and mutant kind learn to work together to survive the sometimes hostile lands.
But there were survivors of the mutant dawn, and they figured out how to survive underground by placing their brains in robotic bodies. They slept f...