The document summarizes three major characters from The Crucible:
1) John Proctor is the tragic hero, who has an affair with Abigail Williams that sets the witch trials in motion. He refuses to falsely confess at the end, choosing integrity over his reputation.
2) Abigail Williams is portrayed as the villain who manipulates the trials out of jealousy for Elizabeth Proctor. She uses her newfound power to take revenge on townspeople.
3) Reverend Hale initially drives the witch trials but has a transformation, eventually opposing the trials after realizing Abigail is lying. However, his attempts to stop the trials come too late.