Fist Fighting Superman
Inexplicably absent from the United States, Superman appeared as a Fist Fighter in England. A carded UK Fist Fighter Superman is a rare and prized item. Carded FF Superman courtesy Mego Museum Curator Brian Heiler. This example does not clearly show whether the sleeves are sewn-on or not.
Below, a detail image of the back of Superman's outfit. Note the half-belt. More costume info here.
Fist Fighting Superheroes Checklist
For a collector wanting to own 100% accurate
FF figures the way Mego intended, it would be as follows.
US & UK Batman (two sets of snaps on outfit-one set is
acceptable)
US Riddler (one or two sets of snaps on outfit-one set is acceptable)
US Joker (two sets of snaps, and higher slit on jacket-one set,
standard slit acceptable)
UK Lizard (Lab coat is same as regular one, pants are altered)
US & UK Robin-Notch in tunic rear
UK Superman-Sewn Sleeves, half belt, two snaps
UK Spiderman-Open underarms, two snaps
UK Captain America-Sewn sleeves, half belt, 2 snaps