This is a video demonstration of South Korea's Avatar inspired mech robot. The robot's arms mimic those of the operator inside. It can also walk surprisingly well, although it looks like the pilot didn't feel safe remaining in the cockpit for that demonstration. Overall it's pretty impressive though. When reached for comment about South Korea's new mech robot, North Korea insisted they already have a fully weaponized version that's twice as tall, four times as fast, and responsible for making the sun shine.
Keep going for the video.