In "The Mark of Athena" by Rick Riordan, the character Reyna expresses her frustration through the exclamation, "Pluto's pauldrons." This phrase reflects her annoyance and perhaps the burden of her responsibilities. It signifies a blend of humor and annoyance common in the dialogue of Riordan's characters, who often face monumental challenges with a mix of seriousness and levity.
The context of Reyna's exclamation likely highlights her struggles as a demigod and leader, facing the pressures of her journey. This moment showcases her strong personality and the rich world of mythology that Riordan creates, where characters frequently encounter the bizarre and the divine in humorous ways. It is a moment that underscores the difficulties they face while also revealing Reyna's character depth.