Finally, I had wrote Ben 10 and Generator Rex crossover story FOR THE FIRST TIME! I like Ben 10 Ultimate Alien and Generator Rex, and they are created by Man of Action, so I decide to create this story. I had finished two Ben 10 Ultimate Alien stories: "There is Nothing to Be Afraid Of" and "Stuck". Find it by using the search engine.
More crossover stories will continue, and I will be in the story. Don't miss it!
Please enjoy reading this!