Perry the Platypus, codenamed Agent P, is Phineas and Ferb's pet platypus, who, unknown to his owners, lives a parallel life as a secret agent. Perry has a lair under the Flynn-Fletcher's house that can be entered through different types of passages. One example is the chimney-vator, in which Agent P finds Santa. His nemesis is Dr. Heinz Doofenshmirtz, and he is always sent to foil the doctor's plans, which he always successfully accomplishes even with minimal details about those plans. During almost every one of his missions, he cleans up what Phineas and Ferb have done. Perry enjoys romance...