The flying superhero, often leading with his fists in the foreground remains an ever so compelling convention in comic books. (Invincible, for example)
The sculptural equivalent is of course patently silly looking. Suspension of disbelief, as well as suspension of material, does not work so well in the physical world.
I thought I would just put a clunky support pedestal under the poor guy's pelvis. He does suffer from some foreshortening- his fist and head are oversized.