I've read some books about Vlad the Impaler. He didn't mess about. The passing of 550 years seems to desensitise what he did in some ways but he conducted a reign of terror which would put Stalin, Hitler and Co to shame. At the same time he protected Europe from the Ottoman Empire, for which every European government was (or should have been) grateful. One typical story -
When diplomatic envoys had an audience with Vlad in 1459, the diplomats declined to remove their hats as a mark of respect to Vlad, citing a religious custom. Commending them on their religious devotion, Vlad ensured that their hats would forever remain on their heads by having the hats nailed to the diplomats' skulls.