The document discusses character design choices for a secret agent teenage character and other stereotypical school character types. It was decided to give the secret agent character a typical teenage look with her hair down and carrying books to blend in, though glasses were kept to suggest she is studious. Upon establishing the story, the designers decided to make her a student and add a school tie to show she is average while still individual. The opening depicts different stereotypes like fashionable "popular" girls, intellectual "geeks", and tough "gangster" boys to establish the school setting with diverse types of people.