I remember Prince Planet on TV in Chicago in the mid-70s. My best friends and I were all in love with the main character. I have never met another person who remembers this show, so I'm glad to have found this information! I'd started thinking I was losing it!! :) I used to watch this along with Battle of the Planets and Speed Racer. I wish they would make some comebacks on Boomerang! these were great shows with good characters and usually some morally uplifting message. The Banana Splits were on around the same time, and those have started showing up on cable - Boomerang. I love to see those now and sort of relive the halcyon days of my childhood!