The MU Cap's head is way too small and too short. I swapped the boots with Dr. Strange's lower legs and he is now as tall if not taller than the newer MU male buck and has ankle rockers.
Lower legs: DR. strange, sculpted boots Head: Angelforge
But those wrists DO swivel. The entire gloves do. Maybe yours is stuck with factory pait (that happens a lot) try heating up the parts and then twist them loose.
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