Yes, WSNS TV-44, Chicago used to air this show (they also aired Speed Racer)in the early 70s. I was about six years old and can only liken the impression it had on me to the Power Rangers or Pokemon infatuation of today. The plot basically surrounded a young boy, Bobby, who (somehow) possessed a medallion through which he became the title hero. Of course his identity was secret and each week he would face his arch enemy. I do recall the very catchy theme song containing lyrics "...he fights bad guys, Prince Planet he's the best... Here comes Prince Planet! Yeah!" Really would like to see it again.
Review of Prince Planet
