Lord Vetinari
In Sourcery, it turns out that The Patrician is named Lord Vetinari and that he is “unfair and unjust but he is unfair and unjust to everyone without fear or favour” and that the only living thing he loves is his dog Wuffles. At the beginning of the book, Lord Vetinari is transformed into an animal and locked up but he is turned back into a human by the end.