Mermaid Man and Barnacle Boy V SpongeBob SquarePants : Season 3 Episode 21

After being treated too much like a child by everyone, Barnacle Boy quits being a superhero and decides to be a supervillain and joins Man Ray and The Dirty Bubble. The three form the group "EVIL," which stands for "Every Villain Is Lemons." While Patrick, SpongeBob, Sandy, and Squidward become superheroes and form the group "I.J.L.S.A.," which stands for "International Justice League of Super Acquaintances," to prevent "EVIL" from committing crimes.