John Proctor is a dynamic character because at the start of the play Proctor has a strong willed personality and shows good leadership and authority. Through the changes he makes, Proctor becomes a better person who finds a sense of goodness in himself. In the beginning, he has an affair with Abigail Williams, which causes all the problems because Abigail believes that if she can accuse Elizabeth Proctor of being a witch, than John will live her. Proctor is reluctant to tell others of the truth Abby has told him. For instance, when Elisabeth Proctor tells him to go and tell Cheever the truth, he is hesitant. "I'll think on it". Soon Proctor begins to change when he finds out that Elisabeth is "somewhat mentioned" in the court. Now he is anxious to tell the truth. His outlook on the situation changes greatly. He becomes involved in the trials, not only to try to save his wife, but other innocent people. He tries to help prove Martha Corey, Rebecca Nurse, and others innocent. He writes up a petition with ninety-one signatures to show that Goody Nurse, Goody Proctor, and Goody Corey are all innocent. Proctor undergoes a dramatic change in the course of the play.
(I’m pretty sure this has 3 supporting ideas, but I’m not 100% sure, I wrote this like 3 years ago)