|Superman was made from a DC Heroes Superman figure. The Hasbro version was pigeon-toed, had scoliosis, was wall-eyed, and worst of all, had underdeveloped calves! Some Superman! I rotated the thighs, built up the calves, straightened the torso, and trimmed down the lantern jaw. A darker paint job, and now we have the true man of steel.
Take a look at the pictures below to get an idea of the extent of the changes. Fortuitously, the torso straightening added about 1/4" in height. I used decal paper (commonly used for model car kits) to get the basic Superman emblem. I considered a head swap until I saw Iron Cow's work so well.