His Grace the Duke of Ankh, Commander of the City Watch, Sir Samuel Vimes.
He does all sorts of fucking amazing shit. Need examples? He fights his way through a massive dwarven mine, while being over 50 years old, yelling out the word's to "Where's my cow?", his son's favorite book.
"WHERE'S MY COW?"
"IS THAT MY COW?"
"IT GOES HRNGGGG!"
"IT'S A HIPPOPOTAMUS! THAT'S NOT MY COW!"
Plus he has DWARVES AND TROLLS AND GNOMES AND A WEREWOLF AND A VAMPIRE AND A DWARF-BY-ADOPTION AND A NOBBY NOBBS.