This is the greatest MOC I ever made. I've built many in my time, but none quite like this one. Meet the Great Spirit Robot, probably one of the largest free-standing humanoid MOCs.
It weighs over a pound and towers 28 inches into the air. To put that in perspective, Toa Mata Nui and Kardas don't even reach the base of his legs. He can hold a matoran or agori in the palm of his hand, and step over any system-based playset from Bionicle. He also carriers two Midak Skyblasters, one under each arm, and holds six spare projectiles within his back.
I built it years ago to represent the GSR, and the only way to truly do justice to that was to keep making it larger. It barely articulates though, because I had to lock its knees, ankles and most of the movement in its hip to keep it standing upright. It uses up a tremendous amount of gray, silver, gunmetal, and black parts, mostly in the armor and technic lift arms.
Oh and I built a second one in December over the course of three days.