In the future year of 2000, Prince Planet was sent from his home planet Radion to study the people of Earth and help them in their fight against evil. His power comes from a pendant he wears, which can only be recharged by energy transmitted from Radion.
Prince Planet is a Japanese cartoon anime series with 52 black and white episodes that aired in the mid-1960's. The series was dubbed in English for American TV. In 2006, the Japanese version was remastered and 57 of the remastered episodes were dubbed in English. The remastered version in English was planned for retail DVD but was never released.
This is a broadcast copy of the series in English. (All 52 episodes)
The remastered Japanese version of the series can be dowenloaded here: