But the final people don't look human they look best case like someone in a mech suit worst case straight up like a robot, and the power source is a different matter from the brain needing blood, and I know it was still a brain that needed blood because he stabbed it and blood came out, but most importantly we've seen what fully mechanized soldiers look like in this series and they don't look like a guy wearing a thin layer of mechanical apparatus they look like f****** hulking Goliaths, that man like the rest of the rebel soldiers we've seen die appeared to have just been wearing armor comparable to the main character and his squad's own armor, and at that level of mechanization better gear means better output and performance not necessarily better survivability of damage. I'm just like to believe that the writer and the artist had a miscommunication because I've seen that happen before especially in regards to fudging details to make a scene look cooler.