Codex Commander - Veteran

Although they resemble a mammal-reptile cross, the _______ have no terrestrial analogue. They are humanoid in form, but _______ have "clusters" of non-differentiated neoblast cells, like those of Earth's planarian worms. Damaged _______ cells mature into specialized structures to alleviate injury or stress. Transformations include thicker skin following injury, lung adaptation for barely-breathable atmospheres, and stronger cardio-skeletal muscle under high gravity. Skull capacity and brain size do not change, and _______ rarely make more than one somatic overhaul.