The original Gridman wasn't that good but that was because it was live action and tried to do things that really only do well animated. The actors were all kids so they lay it on pretty thick. It was a 1 and done series and blended into the background with all the other shows of the time. The US version SSSS, was campy and silly and mostly used to cut costs on filming. Glad the series is animated and found it's stride on the anime scene.