Hawthorne most famously explored the effects of guilt in his novel The Scarlet Letter.
The Scarlet Letter is a work of historical fiction written by American author Nathaniel Hawthorne. It is considered his "masterwork". The Scarlet Letter´s setting is in 17th-century Puritan Massachusetts Bay Colony, during the years 1642 to 1649, it addresses the story of Hester Prynne, who has a daughter as a result of an affair and struggles to create a new life of repentance and dignity.
It would be "A character with a very simple or two-dimensional personality." and "a character who doesn't change throughout the story." Hope this helps! ^-^