Donald and Douglas were results of a mad scientist's experiment to create the perfect little girls. He added chemical X to it by accident, though, and instead of creating The Powerpuff Girls, he ended up with Donald and Douglas. Donald the super-genius ("They're burning literature!") and Douglas the Homer Simpson ("Yay! Lol! I like jelly!") were existent from that day. They worked on some Scottish railway, but then their Non-Obese Controller wanted to scrap them, so Donald tried to escape and lose Douglas, but Douglas caught up, ruining Donald's life from then on. Douglas then went on to lead them to Sodor, where they were faced with a life of hardship at the hands of the Obese Controller. I can't say anymore or Donald will sue me.