The blind man who can now see. He is healed and given his sight back through an act of faith, so like Saul, who is stricken with scabs on his eyes and then given new sight and becomes St. Paul, Reverend Hale has a spiritual experience that restores his sight. He was blind, but now he sees, he sees the right way, the path of goodness, now opposed to the evil of the court.
I think I would use the image of blind justice for Rev. Hale. The notion that justice is blind does not mean that it is always fair or even right but that it takes the evidence and makes a judgment. Hale truly believed that he had come to Salem to save the people from evil. Only when he began to see through some of the accusers and got to know the accused did he realize that evil has many faces and that he may actually have been working for evil after all.
Reverend Hale, who is quite proud of his knowledge in all "demonic arts", and feels a prideful glow as he comes to Salem to dispense his all-knowing wisdom, could be compared to a male peacock, in full splendor, feathers on display for all.
However, as time passes, and doubts of his condemnations enter, consider those glorious feathers plucked out, one by one. Finally, after John Proctor's arrest in Act Three, Hale realizes the fraud of it all, and the dangerous game that is being played. He is, at this point, the peacock without any feathers, defeated, dejected, and a bit pitiful, as he tries to get others to confess, attempting to undo the damage that he did.
I think that the image of a politican could be used to represent the Rev. Hale due to the hypocrisy that both represent.