Cloud Dust is Rainbow Dash's sister. Cloud Dust runs the Rainbow Factory. Cloud Dust sometimes has a horn but most of the time she doesn't. Here's her story: When Cloud Dust first ran the factory her eyes were red, the cloud on her cutie mark was white, the lightning on her cutie was yellow, and Cloud Dust wasn't evil at all. But one day the robots started to malfunction. They shut down, when Cloud Dust went up to them to fix them they suddenly turned on and captured her. But instead of turning her into rainbows they turned her into a robot. But since they were malfunctioning her eyes turned grey and her cutie mark turned different colors. Then she was programmed to be mean. Cloud Dust hates Celestia
credit to MLP and Rainbow Factory for the idea DON"T remix unless you are going to add the Rainbow Factory song!