Brother Watchtower
One of the more clever (or at least not quite as stupid) members of the Elucidated Brethren of the Ebon Night, Brother Watchtower briefly assumed leadership of the secret society in the Supreme Grand Master's absence. Very briefly, as all the secret society's common members except for Brother Fingers were incinerated by the Ankh-Morpork dragon within minutes of his assuming command.
The only one of the Brethren whose day-job was never stated or implied, Brother Watchtower left behind a wife and a brother-in-law, Rodney, whose enviable new buggy had been mysteriously burnt to cinders not long before. Clearly a marvelous example of karma, considering how very dreadfully Rodney's possession of said coach had "oppressed" this much-nagged Brother...