Patrick Harper is described as a gigantic Irishman. He is huge in stature and equally larger than life in his sense of humor. Aside from his immense size, the most notable quality about Harper is his perennial upbeat attitude. Even in the most somber of situations, Harper finds humor. When Sharpe throws the captured sword of an enemy in the river after both he and Harper nearly died at the hands of that villain, Harper comments that Sharpe's action might "frighten the fishes."