Aiden Clark is a supporting character in School Bus Graveyard. He's loud, extroverted, and never stops smiling. His cousins are Ben Clark and Lily Clark. His parents, Daniel and Jessica Clark are rich- According to context clues, likely authors or publishers.

Aiden has a smile that sets him apart from the other characters- In the sense that unlike Ashlyn, who rarely smiles, Aiden doesn't stop smiling. The only time we see him not smile is when Ashlyn is in danger, or when looking at a photo of his younger self. We can see he's using his fingers to make himself smile in Red's official banner art of him.