The darkness

The darkness is from an animated pilot from adult swim called Learning with Pibby where this big black glitch mass invades Pibby’s, and her friend Bun Bun’s, home. It goes on to corrupt other cartoons and turn the characters in them into smiling, unsettling zombies. This all takes place in the CN universe. Unfortunately this show was never greenlit. You are just a random person living his day, not knowing the darkness is coming his way.