A dynamic character is a character that undergoes an important inner change throughout a story. Throughout the play, both John Proctor and Reverend Hale are considered dynamic characters because they experience dramatic internal changes throughout the play.
At the start of the play, John Proctor is filled with guilt for cheating on his wife and refuses to provide the Salem court with the valuable information that Abigail and the other girls are lying. He also values his reputation, which is another reason he refuses to disclose his affair with Abigail to court officials.
As the play progresses, Proctor's wife gets arrested, and he decides to travel to Salem to expose Abigail as a liar. By the end of the play, Proctor not only sacrifices his positive reputation by openly disclosing his affair with Abigail but also signs his own confession. In one of the most dramatic scenes in the play, Proctor tears up his confession and atones for his past sins by refusing to sell out his friends. Proctor changes from a relatively selfish, private individual, to an outspoken dissident, who finds redemption by becoming a martyr.
Reverend Hale is also considered a dynamic character throughout the play. At the beginning of the play, Reverend Hale is an eager specialist, who hopes to discover witchcraft throughout the community of Salem. He is firm supporter of the court. He views every citizen as a possible witch and truly believes that dark spirits inhabit the community.
Over time, Reverend Hale becomes suspicious about some of the people being accused of witchcraft and begins to conduct his own independent investigations. By the end of act 3, Reverend Hale realizes that the court is corrupt and the goals of the court officials are simply to maintain their authority. By the end of the play, Reverend Hale does not believe that witchcraft is rampant throughout Salem and encourages the accused citizens to falsely confess in order to save their lives. Reverend Hale changes from being an adamant supporter of the court and leading figure in the witch hunt to a guilt-filled man, who dedicates his time to challenging the corrupt court.