Slim is one of the three members of The Amoeba Boys. He is a tall thin Amoeba with a gangster affectation. Slim is based loosely on Bugs Moran and Al Capone, he can be decribed as the tall one. He wears a brown fedora and is even more incompetent and slow than the other amoebas. Like the other amoebas, Slim would love nothing more than to be regarded as a serious villain worthy of fighting, and even getting beaten up and sent to jail by the Powerpuff Girls. Unfortunately, his brain is far too primitive to devise a crime above the level of littering or jaywalking. He is definitely one of Townsville's least malicious villains, even having a friendship-of-sorts with The Powerpuff Girls. He is generally harmless, but his actions have on several occasions endangered both the girls and the town purely by accident. Slim is the equivalent to the gangs brain- dead goon, as both Bossman and Juinor are more intelligent.

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