>>23454114
>One on hand the villains feel like a Sentai villain group, which isn't bad per se but it just seems weird. I guess they feel more like Metal Heroes villains now that I think about it.

It makes more sense when you consider Jin Dogma from Super-1's 2nd half. That already was an alien empire with several generals that cycled for the monster of the week (although they didn't have unique theming for their monsters). And Black RX's main writer also was Super-1's main writer.