Up until a few weeks ago - I had never, ever heard of such cartoon superheroes as Birdman and The Galaxy Trio (featuring Vapor Man, Meteor Man, and Gravity Girl) even though their actual incarnation goes all the way back to 1967.
I guess my unfamiliarity with these particular crime-fighting crusaders has to do with the fact that they are not a part of the snobbishly elite "Marvel Comics" set and, so, they have not been given their due attention and much-deserved respect.
Anyway - Birdman and his fellow superheroes were originally created by William Hanna and Joseph Barbera (who are also credited for the creation of The Flintstones and The Jetsons).
Now, I would never say that these Birdman cartoons were fantastic - But - IMO - (Considering that they are now 50+ years old) - These pre-CG, animated shorts are just as entertaining and exciting as are any Marvel cartoons that were being aired back in those days. Yep. They sure are.