Cassie's archetypes are mental figures representing different parts of Cassie O'Pia's personality. They include Counterfeiter Cassie, Librarian Cassie, Teacher Cassie, and Writer Cassie.
Writer Cassie[]
Main article: Writer Cassie
Writer Cassie is the first Cassie archetype that Raz meets. She represents Cassie O'Pia's hopeful outlook on the world. She also represents the author side of Cassie.
Librarian Cassie[]
Main article: Librarian Cassie
Librarian Cassie is the second Cassie archetype that Raz meets, and the final boss of the level. She represents Cassie O'Pia's serious outlook on the world. She is the personification of the categorical side of Cassie's mind.
Teacher Cassie[]
Main article: Teacher Cassie
Teacher Cassie is the third Cassie archetype that Raz meets. She is the personification of the instructor side of Cassie.
Counterfeiter Cassie[]
Main article: Counterfeiter Cassie
Counterfeiter Cassie is the fourth and last Cassie archetype that Raz meets. She represents the side of Cassie that is willing to take risks to preserve herself and her own goals.
Hippie Cassie[]
Hippie Cassie was a fourth (or perhaps fifth) Cassie archetype that Raz intended to meet at some point. No physical appearance of her seems to exists but only dialogue of her inside the files of the game. From her lines it indicates that she was going to represent her time with the Psychic Seven at Green Needle Gulch.
To hear all of her dialogues check out this video (Psychonauts 2 cut content: Hippie Cassie).