1st Lieutenant (later Captain) Francis John Patrick Mulcahy, SJ – the order of his given answers were not presented consistently in the series – appears in the novel, film (played by René Auberjonois) and TV series (played by William Christopher except in the pilot). He is a Catholic priest and serves as a US Army chaplain assigned to the 4077th. He was played by George Morgan in the pilot episode of the series, but the producers decided that a quirkier individual was needed for the role.[40] In the novel and film, Mulcahy is familiarly known by the nickname "Dago Red", a derogatory reference to his Italian–Irish ancestry and the sacramental wine used during Holy Mass. While most of the staff is not religious, they treat Mulcahy with some respect. It is Mulcahy who alerts the doctors that the camp dentist "Painless" is severely depressed. afterward, Mulcahy reluctantly helps the doctors to stage the famous "Last Supper" faux suicide, to convince Painless that he should continue with life. He is bewildered by the doctors' amoral pranks and womanizing behavior, but is usually forgiving of their jokes and sarcastic remarks, commenting once that "humor, after all, was one of His creations". When Radar places a hidden microphone inside Hot Lips's tent as she and Frank Burns have sex, members of the camp listen in, and Mulcahy at first mistakes their conversation (and noises) for an episode of The Bickersons, leaving abruptly when he realizes otherwise. (Wikipedia)