This one was sitting on my worktable for a long time (2 years.) Had the base done and ready to paint but was stuck trying to figure out the helmet. The coin machine bubble cases were too big for the rim I made and I could not come up with anything. Finally decided to use foam with a trimmed case, pulling it narrower to fit. It works ok I guess.
Used a common recipe of using FA Ironman and had a spare SHIELD agent had laying around. Fodder bits, Green Stuff, and repair putty for the suit details.