Sceptum
Sceptum is an entity or person briefly named by John Lawn in Night Watch as the patron philosopher of Doctors. He may well be a Discworld take on Galen or Hippocrates, but in the context, this is a far more cynical medical ethicist whose primary question is always one concerning the ontological and epistemological vagaries of a utilitarian redistrbution of ecomimic resources and the aesthetic pursuit of worth, eg, Am I going to actually get paid for this or is it another pro-bono job?