Nobody likes you, Porky.
Also, I want Duster more.

Someone can be childish and at the same time smart enough to become a powerful figure and leader, I think the fact that he is both makes him a very interesting character, and the fact that he fights the heroes not in the beginning but always at the end, when they are more strong, shows that even if he is a coward, when he thinks he cannot lose he will fight, and is the fact that he fights with cool spider robots what makes him a very interesting fighter for Smash.