Imaginary Fiend / Cootie Gras

In "Imaginary Fiend", a new kid at school proves so unpopular with his classmates that he conjures up an imaginary friend, who turns out to be quite destructive. In "Cootie Gras", one of Pokey Oaks' students develops the cooties and everyone in school, even the Powerpuff Girls, are avoiding him. Mojo Jojo uses the situation to his advantage.