Hey guys. I found this theory that Samurai Jack is in the same universe as the Powerpuff Girls & takes place decades later. The result of the Powerpuff girls fighting an enemy almost destroyed the world. The professor is Samurai Jack, Who went Captain America on himself. The city seen in Samurai Jack is the city of Townsville & a billboard seen in the Powerpuff Girls can also be seen in Samurai Jack. But of course, it's a theory, any evidence is hardly any.