You are not well versed in robotics are you? Robots have been around ever since some guy learned to take wheels, springs and cogs and put them together to make them produce self sustaining movement in humanoid figures several centuries ago. 350 B.C. to be exact:
That's more plausible in real life than people having a chromosome that allows them to manipulate their body density to phase through walls. And I never said I wanted 50 foot Sentinels. Have you read my previous posts where I stated that the original Sentinels that were 10 - 15 feet high. The only Sentinel that should be 50 feet tall is Master Mold. And for the most part he was in a sitting position cranking out the smaller ones. I mean come on, if you can believe a guy is a Thunder God or a man can make a robotic exosuit that gives him the strength of a God, why is a relatively tall robot that incomprehensible?