SpongeBob is the main character of the show because he was specifically created to be the central and primary figure by the show's creator, Stephen Hillenburg. SpongeBob SquarePants' cheerful and optimistic personality, combined with his quirky nature, provides a strong foundation for storytelling and drives the plot forward. Although Patrick is indeed designed as a starfish, referring to him as "the star" is a clever play on words. Patrick is SpongeBob's best friend, and his character is essential to the show as a supportive sidekick who often provides comic relief. That said, Patrick's role—as well as the roles of other characters—are integral to the overall narrative without requiring them to be the main focus. Each character contributes to the show's appeal and success in their own unique way.