Frequalizer, I did some early proofing and it looks like this could really work.
I'm using the legs from a Santa Jack Skellington with black feet, and I attached them to a S68 Cyclops pelvis (with the 70s buckle). The colors look great with a Captain Mar-Vell head. What remains:
I will probably use either a Yellowjacket or AIM Solider torso, but I need to track one down.
I would prefer to use the S68 Colossus overlay because it has a better tampo (chest detail), but seems pretty hard to track those down these days so I may need to abandon that in favor of the old school GSXM box Colossus.
Once I find my overlay, I'll probably super glue a wing bracket to the back.
I need to identify a hair cap, preferably blond, that just sits on top, like one of those Hulk pieces.
I'm sure I have Thor bracelets lying around somewhere, so that would complete it.