As the series continues we see that apparently not all advanced worlds belong to this Union because PP finds himself in conflicts with different alien beings not only who travel to Earth in conquest but also on other worlds, such as Hydra, Beta, and Kragmire where Krag, Zerona, and Fridgeena are from - major enemies of PP and the forces of good.
Prince Planet was not alone however as he had allies from Earth to fight by his side namely, Diana Worthy whom he met on his arrival on Earth and gave him the name "Bobby", Dan Dynamo a washed-up wrestler and strongest man in the world type, and Aja Baba, an middle-easterner who flys around on a proverbial "Flying Carpet" but this one has an engine in it!!
This foursome is present on practically all 52 episodes, but sometimes Diana is left out in the cold early on because the situation is "too dangerous" for a girl. Later on in the series she proves herself to be quite a valuable part of the team in eps such as "Rico the Detective".
Each episode is unique and the subject matter covered while usually in the "Sci-Fi" genre is always interesting. Certain themes and behaviors are estabished early on and continue throughout the series such as the interplay seen in the insult trade-offs/disputes between Aja Baba and Dynamo who at heart are really great friends, and the fatherly and protective attitude that PP displays toward Diana. There is no hint of a boy-meets-girl love-interest between these two at all - if there is any it is hidden in original Japanese. In return Diana idolizes PP/Bobby and constantly looks to him with awe and respect.
The Major baddies in PP are Warlock the Martian Magican, and Krag the Merciless and they provide most of the trouble throughout the series, but there are also many monsters, other aliens, renegade robots and tough gangsters that chip in to make things difficult for PP and his friends.
All in all this makes for great fun and a very exciting series
52 Episodes Televised in Japan 1965-66
TBS movie corporation effect: The Tokyo Broadcasting System, Inc.
Planned by: TBS movie section
Production: Tele-Cartoon Japan (TCJ)
Scriptwriter: Reuben Guberman
Director: Mark Harris