I knew that Gavan was an influence on Robocop's suit design when I watched it, and even then the comparison didn't really jump out at me.
Gavan's the right color, and his helmet's right, but he's not a cyborg or robot at all. Plus he's reeeaally agile. More of a "lightning bruiser" than Robocop's "heavy, unstoppable juggernaut".
Janperson's not as slow as Robocop, but he's not jumping or running around all that much. And he does make a lot of "robot noises" when he moves and walks.
Jiban . . I've only seen one episode. His cyborg form's face isn't as "Robocop-like" as Gavan's or Janperson's, and the fact that he somehow has a human form is a conceptual step away from Robocop as well. But he is a cop, he is a cyborg, and he was explicitly made as a tokusatsu take on Robocop, so there you go.
But like kenSHIRO says, they're all cool.
So does anyone know the details of Gavan's influence on Robocop? Did Paul Verhoeven watch an episode of X-Or and say "Yes! That's it!"?