To start this off, the stuff I used to paint this guy was a very small amount of stuff... I used (with the recommendation from Vegeta8259) a Real Touch Dark Gray Gundam Marker for the panel lines, and it worked wonders! A standard black panel lining Gundam Marker for some of the vents and stuff, some black paint and fine tipped brush, the small sheet of decals the kit came with, and some toothpicks and cotton swabs.
Painting this guy was a joy, and a slight pain all at the same time. There were details that were harder to do than others, like the chest vents and head unit, and practically the rest was a breeze. I only used one sticker on this kit, and that was the eyes. The black trim on the shoulders, front skirt, upper legs and ankle guards were hand-painted with thinned down black paint. Unfortunately, the black paint on the ankle guards didn't look as smooth as I would've liked (see below).
His articulation is pretty straightforward for a MG. To me the most notable feature is the peg the shoulder armor plugs into and the movement it allows for the shoulder. It adds a bit more flush to the arms movement and overall look to the kit (a good example is the first photo). Standard double-jointed knees and elbows, with ball-joint feet, hips, head, and wrists. The shoulders have a joint inside the torso that allows it to move in and out as well as rotate 360 (keep in mind the Core Lander) and move in and out of the body. The feet are pretty well articulated, with the front half of the foot able to be posed up to make him look like he's stepping forward, or back for an arial pose. Because God Gundam isn't very bulky or have wings, he is very maneuverable, but I have to warn you, the side skirts like to pop off if the legs are moved out too far (maybe it's just mine... :/).
(lower body close-up)
(upper body rear view close-up)
(lower body rear view close up)
(God Mode action pose)
(God Mode close-up