Isn't he strange enough already? This amazing 11-ounce ceramic Dark Knight Joker Stranger Morphing Mug miraculously transforms from plain black to full-color images of the Joker from The Dark Knight and the words "Whatever Doesn't Kill You Makes You Stranger" when you add a hot liquid! Do not microwave. Hand wash only. Not dishwasher safe. Holds up to 11 ounces of fluid. Ages 13 and up.