Symbolizing Characters

In the my book, Angels & Demons by Dan Brown, each character is unique in their own way. Ranging from strict and stern, to adventurous and trust worthy. With each new chapter, more is revealed about the characters and the plot in the story.
The main characters are Robert, Vittoria,  and Olivetti. Each have different roles and pull the plot forward.

Olivetti is a Swiss Guard leader that is very strict and strong. Olivetti is very aggressive and can disagree a lot. He pulls the plot by being weary about the Illuminati attack. As the book moves on, Olivetti helps bring the Illunminati to justice. One symbol that would describe him would be a teacher's apple. This describes Olivetti because Olivetti is very strict but is giving and caring like a teacher. He is giving because he helps Robert and Vittoria find the killer. According to the text, " 'Until these numbers count down? Until Vatican City disappears? Believe me, I do not take kindly to people tampering with me security system...I am concerned. It is my job to be concerned. But what you have told me here is unacceptable'" (Brown, 112). This quote shows his aggressive manners and strict rules but also shows how he is caring and giving because he does want everyone's safety.

Vittoria is a strong and fearless girl woman. Vittoria is also a scientist so she is very smart with great ideas. She moves the plot along because she was the one that created the epic bomb that could destroy the Vatican. She also tries to stop the problem by helping the police find the Illuminati member. Vittoria can be symbolized as a wolf because of her strong abilities, fearless mind, and smart ideas. In the text, "'Someone needs to make sure the inside is clean...I meant me'" (Brown, 196). This quote shows her strength and fearlessness in action.

Robert is a history professor that brings lots of twists to the story. He pulls the plot as a protagonist that tries to stop the antagonist from killing thousands of people. Robert is a very smart and strong man. He can be symbolized with an old book. This is because he is a very intellectual person with great qualities. Also, like how an old book is strong because it has lasted for hundreds of years, Robert is also strong. According to the text, "Langdon chuckled to himself. He was amazed how few people knew Santi, the last name of one of the most famous Renaissance artists ever to live." This quote shows Landon's great knowledge and ability to figure things out and help stop the Illuminati.

Based upon the descriptions, what other symbols do you think describe the people's characteristics?