The guy who's been tapped to play Superman in the new installment has looked a bit gangly and awkward to some since his casting was announced ... but not anymore.
David Corenswet -- who's playing the Man of Steel in James Gunn's forthcoming 'Superman: Legacy' -- got snapped in a gym pic by fitness trainer Paolo Mascitti ... who's apparently working with DC to get him nice and hunky for the titular role.
Based on what we can see here .