User blog comment:Pancake301/IM WRITING A ZOMBIES BOOK/@comment-1956117-20111119012748

You could try coming up with some non-canon information about Richtofen and test subjects, like how he had secret subjects that he never revealed to anyone (even to Maxis) and that they were to have the same thing done as the original characters, and they eventually fight their way through Germany after being in comas, relearning the project Richtofen started and how/why everything works like how it does.