Here are some of the key personality traits of Mary Warren:
* Timidity: Mary is a shy and timid young woman who is easily intimidated by others. She is often afraid to speak her mind and is quick to defer to those in authority.
* Subservience: Mary is a very subservient young woman who is eager to please those in authority. She is always willing to do whatever she is told, even if she knows it is wrong.
* Superstition: Mary is a very superstitious young woman who is quick to believe in the supernatural. She is easily swayed by Abigail's stories of witchcraft and is quick to join in on the accusations.
* Guilt: As the play progresses, Mary begins to feel guilty about the role she has played in the witch trials. She is torn between her loyalty to Abigail and her desire to tell the truth.
* Courage: In the end, Mary finds the courage to stand up for what she believes in and tell the truth about the accusations. She is able to overcome her fear and guilt and stand up for justice.
Mary Warren is a complex and well-developed character who undergoes a significant transformation throughout the course of the play. She starts out as a timid and subservient young woman who is easily swayed by others, but she eventually finds the courage to stand up for what she believes in. Mary is a reminder that even the most meek and mild-mannered people can find the strength to do what is right.