Agent P is upset to learn that he has to move away since he's being assigned to a new villain, as he doesn't want to leave Phineas and Ferb.
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When Phineas and Ferb think Perry is lost, they use the power of music to find him. Meanwhile...
Perry the Platypus, codenamed Agent P, is Phineas and Ferb's pet platypus, who, unknown to his...