In "The Blood of Olympus" by Rick Riordan, a moment of humor and vulnerability arises when the character Hazel exclaims in distress about popcorn being their "fatal weakness." This quote highlights the characters’ lighthearted banter amid the serious challenges they face. It underscores the idea that even in dire situations, small, relatable moments can serve as a source of laughter and camaraderie.

The reference to popcorn as a weakness also serves to humanize the characters, making them more relatable to the audience. It emphasizes that while they are heroes facing monumental tasks, they also have quirks and preferences that add depth to their personalities. This blend of humor and heroism is a hallmark of Riordan’s writing, as it engages readers while allowing them to connect with the characters on a personal level.