His Grace Commander, Sir Samuel Vines; Duke of Ankh and head of the Ankh-Morpork City WATCH. An upright and honest man whose appointment as head of despised Night Watch – regarded by all sensible people as a completely useless appendage to the running of the city – may have been the cause of his drinking problem.
By his own account he is a skinny, balding, unshaven collection of bad habits marinated in alcohol, although these days he is better shaved and doesn’t drink, creating a promotion to Commander, and knighted against his will and made a Duke by Lord VETINARI.