Who is the main character in the "The Monkey's Paw," and is (s)he static or dynamic?

The Monkey's Paw itself would have to be the main character that illuminates the conflict of both Man vs. Himself and Man vs. Man in this story. At the onset of the tale,the mysterious paw is handed over to the White's after their son insists on having it. Following, is the death of Herbert, the son, Mrs. White's second wish to have him alive again, and his father's last wish to have him returned to the grave. Having a wish granted is a universal desire; however, for 200 pounds, the paw only brings misery and despair! The Paw controls the plot and is a static character; it is incapable of changing for the better!