When legendary comics creator Stan Lee met Internet phenomenon Grumpy Cat, there was only one way things could go down: with a grump-off. While it's unclear who emerged the winner (besides us, of course), at least the showdown was captured for posterity.

The encounter occurred over the weekend at Stan Lee's Comikaze Expo in Los Angeles, where Grumpy Cat was promoting her multimedia empire (including the new Dynamite comic The Misadventures of Grumpy Cat), and Lee was being, well, Stan Lee.

(via Uproxx)