Four kids, Reb, Tom, Polly and Dan, went to the Dell Hall of Heroes which wax statues of heroes despite Dell only having a handful other superheroes and not enough for a museum. They wandered into the "Future Room", which for some reason had experimental robot superheroes. Doctor Luuki (the discredited maker of the robots) caused an electrical explosion causing the Enndo-Man robot to come alive and go berserk. The explosion also caused gave the kids the ability transfer their minds into the remaining robots. They stopped Enndo-Man and Luuki and become the super hero team Fab Four. They also fought the Coal Man, Johnny Boom Boom, Mr. Nutt and the Clown. The Fab Four's comic Super Hero lasted four issues.
The teams members were Crispy (really Reb), who could freeze things; Hy (Tom), who could generate sound waves; the super fast, resistance to heat Polymer Polly (Polly), who was also super fast and generate super strong polyfilament fibers (hence her name); and El (Dan), who has x-ray, infra red and heat ray vision.
My sources were the International Catalogue of Super Heroes pages "Fab Four" and "Dell / Gold Key Comics".