Among the Warner trio, he played the role of the straight man, making wisecracks about the actions of his brother and sister, and about various celebrities. The character in the show that was presumably intended to amuse adults, with his many allusions to people and things that aren't so well-known today; probably also part of the reason why Fox got rid of the show after not too long. I'm pretty sure most kids were much more amused by Wakko, with his talents for everything juvenile humor is based on.