No one knows the real identity of the friendliest troll on Twitter, but everyone knows why they love him. This Photoshop wizard — who often puts himself in his work, in the form of a red panda — creates the best images on the web, often building on a funny theme or taking on something from the news. Be nice to him and you just might get a personalized avatar. As one of Twitter’s best-kept secrets, let’s just hope he doesn’t vanish again. —Kelly Conniff