There are TONS of sentai shows in Japan.. even from the 70s!

I don't recall seeing the power rangers near the Tokyo Tower, but it may be possible...

Check on Kazaa or winMX for like.. Hurricanger (or however it's spelled), you'll find something VERY similiar to Power Rangers (if not identical). I once found an old 70s sentai show, which is how I know they're from the 70s.








Back on topic.
Nah, there couldn't be. 3's the max... if there could be 4, why not 5, or 6? Or just an entirely black eye?