The British Fighting Fantasy Gamebooks published in the 1980s and 1990s contain an interesting example in Lord Azzur, the tyrannical ruler of Port Blacksand, the otherwise hopelessly corrupt and vile City of Thieves. While Azzur was a notorious pirate and murderer before he seized control of Blacksand, he indulges some rather odd acts of charity, including providing a luxurious home for a woman abducted by the evil Snake Men of the Desert of Skulls and left with the head of a giant snake, and celebrating the New Year by executing several of Port Blacksand's wealthiest citizens and donating their riches to the poor.
Subverted in the Blacksand! sourcebook, when the entry for his first charity executions is immediately followed in the timeline by "Several of the now-rich citizens from last year's poor are killed in this year's charity executions." Fine sense of irony, that tyrant.
The reader can even use Azzur's care of the Serpent Queen (the lady with the snake head) to their advantage in the book City of Thieves. If the player character enters the Serpent Queen's home, they can avoid a fairly difficult fight by presenting her with flowers and saying they are from Lord Azzur. She takes the gift with delight and gives the player a small tip.