Kinnikuman (1983)

Kinnikuman (real name Suguru Kinniku), is a clumsy, foolish, comical superhero who discovers that he is the missing prince of the planet Kinniku (known for producing the greatest superheroes in the universe).

Since he is a clumsy fool, however, he must prove himself worthy of the throne. To do so he enters wrestling competitions and battles evil Chojin.