Wonder 3

is a Japanese manga and a black and white anime series created by Osamu Tezuka in the 1960s. The series tackles a number of issues which were unusual in animated cartoons of that period: in particular, ecological concerns and poverty. The series was first released in manga print format in Japan in 1965, and then spawned a Japanese anime television version, with different stories.

Plot
The adventures of three agents from outer space who are sent to Earth to determine whether the planet, a potential threat to the universe, should be destroyed.