Howard and Theodore (brothers, ) made these special effects at Republic Pictures. Howard later went on to work for Irwin Allen shows like “Voyage to the Bottom of the Sea.” and “Lost in Space”.
I heard they tried mannequins on wires for the 1978 SUPERMAN but they said they couldn’t get it to look right. It had “No life”.
But this footage was 3 or 4 decades earlier and it looks great. A Superman mannequin with some animatronic parts could still work today.
Those Captain Marvel shots look great until you see too much of the mannequins face,