Sean Murphy

Sean Murphy is a Irish American correctional officer

A fair and honest officer, Murphy is handpicked by Tim McManus to act as the head CO of Emerald City as he and McManus are lifelong friends. Throughout the series, he is highly regarded by both McManus and Warden Glynn as he displays honesty, integrity, a lack of bias, and a belief in justice much more than the rest of the Correctional Staff. As a result he is one of the best COs in Oz and does a better job commanding the COs than most anyone else. He does, however, form a relationship of mutual respect with fellow Irish American Ryan O'Reily, an inmate. While he at times shows preferential treatment to O'Reily, he also discovers Ryan's scheme to drug his brother's boxing opponents and puts an end to it.