The torso, seen here, is highly complex. It has a technic struction that runs through the back and front, and the arms and legs are deeply affixed in the body. There are more than a dozen friction-adding gears in each hip alone, enough to allow the legs to move with enough friction to stay up. There are linkages in the hips as well. Personally, I feel that the greebling on the front chest plate, which is cleverly angled in several dimensions to fit together with technic panels, is some of the best on the entire model.
Note the detail in the pelvis here. Also the top images show the model's feet, which can rock side to side, a necessary piece of articulation, as shown off in the next several photographs. Clearly, despite being incredibly large and heavy, this model can support its own weight in a pose. A towel was added for extra friction, but in general this behemoth can pull off an action stance.
The next several images show the head, which is meticulously detailed to include a fold-out cannon from beneath the dome. The jaw moves as well, and the entire face is meant to resemble a curmudgeonly old man, or even a skull, for this entire mech is designed to mock the human form.
The arms are fully articulated with joints in the shoulders, wrists, and elbows, and the fingers are too. They can spread and bend, and the thumb can articulate at two points.
Below are the images of the cockpit. The entire chest plate rotates down, exposing the technic structure, and inside is a fully detailed series of controls as well as a removable chair which is presently being used by Snuggles himself, the supreme commander of this entire army.
Finally, here is the scale of the model contextualized. Being twenty-two inches tall, it dwarfs all humanoid figures officially made by LEGO. On the left is a photo with Titan Class Scorponok, one of the largest Transfomer toys released, and as you can tell, Snuggles's mech is actually larger. In the next picture, you can just make out a gray blip at the giant's feet; this is Snuggles sitting underneath his mech. And on the far right, there is the mech next to its creator.