In "The Mark of Athena" by Rick Riordan, Percy Jackson watches his friend Jason Grace soar through the sky. Percy's observation highlights Jason's impressive ability to fly, making him appear heroic and admirable. The comparison to a "blond superman" signifies Jason's extraordinary nature and aligns him with classic superhero traits.
This moment underscores the camaraderie among the characters and their recognition of each other's unique powers. Percy’s remark not only reflects his surprise but also emphasizes the themes of friendship and admiration found throughout the series.