An elderly man in brown robes with whiskey blotches on his cheeks, Father Tully is almost perpetually drunk and when not, looks for money to get drunk with. Although he claims that the Temperance Union helped him break his habit, it's apparent that they did not. Yet despite his habits, he is the only preacher in the city and who listens to confessions of the mighty and wealthy, making him a good source of information.
Father Tully can provide the player with a lot of background information about the New Reno families, if bribed with alcohol. He can tell the player about the Stables and can warn them about Salvatore's laser weapons, one of the ways of opening a minor quest dialogue option with Eldrige in New Reno Arms. This is similar to the introductions Jules offers, but is a lot cheaper.
Upon completion of the game, he presents the player with the Fallout 2 Hintbook if the player talks to him.
Father Tully appears in Fallout 2.
There was going to be a quest to retrieve a bottle of wine for Father Tully from one of his old friends in The Abbey, a location cut from the final game. This quest is added with Killap's F2 Restoration Mod.