Super Secret Crisis War!

Super Secret Crisis War is a 6-issue comic miniseries published by IDW Publishing. The series will involve a crossover between five Cartoon Network series: Ben 10, Powerpuff Girls, Dexter's Laboratory, Ed, Edd n Eddy, and Samurai Jack. It is scheduled to be released in the summer of 2014.

IDW Summary
The devious demon Aku has called together a League of Extraordinary Villains - composed of malevolent miscreants from different cartoon universes. When their evil robots show up in the worlds of "The Powerpuff Girls," "Ben 10," "Samurai Jack," "Dexter's Laboratory", and "Ed, Edd n Eddy," it's up to all these fearless heroes to band together and put an end to the League's nefarious plot of inter-dimensional conquest!