Watch Thundercats Season 1 Episode 37 full movie online free in HD with English subtitles – no download needed.
Thundercats: On Lion-O's 20th birthday, he must pass a set of trials to become the true Lord of the Thundercats. Even though he is the hereditary Lord of the Thundercats, he has not proven himself to be worthy of that title. His first test is to beat Panthro in a dual to test his strength.