Black and grey tattoo design of the classic Harley Quinn, wearing her original jester costume from the Batman animated series. The design should feature her playful yet dangerous expression, with intricate detailing on her iconic black and red suit, jester hood, and mask. Include elements like her oversized mallet or playing cards (hearts, diamonds) to emphasize her mischievous nature. The shading should focus on strong contrasts, capturing a retro, comic book style while adding a modern, realistic touch.