Phineas and Ferb discover what their fans have known for a long time - that their beloved pet platypus Perry is really a secret agent, who battles the forces of evil every day The boys team up with Perry for a grand adventure in a parallel universe, where they must overcome an even more evil version of their arch protagonist Dr Doofenshmirtz. (2011) Stars (voices): Thomas Sangster, Vincent Martella, Ashley Tisdale. Premieres on the Disney Channel on September 30th 2011.