Perry the Platypus

"He's a semi-aquatic, egg-laying mammal of action"

- Lyric from Perry the Platypus Song

Perry the Platypus, codenamed Agent P, is Phineas and Ferb's pet platypus, who, unknown to his owners, lives a double life as a secret agent for the O.W.C.A. (The Organization Without a Cool Acronym) (a.k.a. "The Agency"), a government organization of animal spies. In the Agency, his immediate superior is Major Monogram.

Perry is normally found acting like a mindless platypus in front of his owners, Ferb and Phineas. He is also serious while not undercover, even in front of Major Monogram when he does anything silly

Perry also appears to be selfless and devoid of vanity. In "The Best Lazy Day Ever", it is only after he turns everything affected by the Ugly-inator back to normal that he reverts himself to his normal state. He also deeply cares about the Flynn-Fletcher family and is afraid to lose them and would take immediate action whenever they are threatened.He is nice to not only his allies, but to his nemesis Dr. Doofenshmirtz as well, though only at some occasions.

It is currently unknown how Perry was recruited into the Agency in the first place, nor what kind of training Perry has undergone before receiving missions.

For a platypus, Perry has above-normal strength, speed, stamina, accuracy, and reflexes, (According to Doofenshmirtz, he can perform "highly improbable judo maneuvers") making him a formidable hand-to-hand combatant. A master of platyjitsu, Perry can subdue his nemesis, Dr. Doofenshmirtz, with ease. Perry is quick-thinking and very efficient in his missions. Perry was also able to single-handedly destroy five Norm Bots whereas a group of twelve fellow agents failed to destroy even one despite numerical superiority and an initially successful ambush He has also been shown to respond to and understand not only English, but French as well, however at one occasion he needed a dictionary.

Perry has a lair under the Flynn-Fletcher's house that can be entered through various passages. One example is the Chimney-Vator. Other entrances include one in the side of the tree, another in the side of the house, one in the middle of the backyard, and various others scattered throughout the property and even other parts of the city.