Perry and Vanessa's relationship



Perry the Platypus has encountered Vanessa Doofenshmirtz several times due to his daily battles with her father, Heinz Doofenshmirtz. Despite her being the daughter of his nemesis, and her having helped out with her father's traps and schemes on occasion ("The Magnificent Few", "Tree to Get Ready"), the two get along very well.

Perry's perspective
Perry has shown a willingness to help Vanessa out if she needs or asks for it. The first time this is seen was at her birthday party. After helping Dr. Doofenshmirtz set up her birthday party, he watched as Vanessa chewed out her father for setting up a party meant for a little girl, not a teenager like her. In the process of defeating Doofenshmirtz, a large firecracker activated and nearly destroyed the entire room. Perry pulled Vanessa to safety under a table, and when the coast was clear, they came out just in time for her friends to arrive, proclaiming the ruined room "the coolest party ever." Vanessa credited both her father and Perry with setting it up, and Perry acknowledged this with a tip of his hat before leaving ("Dude, We're Getting the Band Back Together").

More recently, he has assisted her in concealing her relationship with Monty Monogram from her father. Although Perry was initially shocked upon discovering her interest in him ("Minor Monogram"), he has twice helped keep the relationship a secret. The first time was upon Vanessa's request; while on a mission at a coffee shop, Perry noticed Vanessa and Monty there and tried to disguise himself. She noticed him, however, and asked him to conceal the date from her dad; he agreed and wound up spending tireless minutes holding or placing objects between Doofenshmirtz and the couple ("Sipping with the Enemy"). The second time, at the Danville Doo Wop Hop, Perry managed to launch Doofenshmirtz's car into space just before he recognized the boy Vanessa was with ("My Sweet Ride").

Vanessa's perspective
Vanessa knows Perry as a secret agent, not as Phineas and Ferb's pet, and all her interactions with him have been during his missions. She always greets him whenever they run into each other on one of his missions ("Phineas and Ferb Summer Belongs to You!", "My Sweet Ride"), and she trusts Perry enough to ask him for help in concealing her relationship with Monty ("Sipping with the Enemy"), and thanks him for fixing her birthday party ("Dude, We're Getting the Band Back Together"). However, she was upset with him after he went along with Doofenshmirtz's plan to overprotect her, saying that she expected better from Perry ("Skiddley Whiffers"). That being said, she does hold Perry in high regard, and frees him from a trap when the two of them and Dr. Doofenshmirtz are in danger ("Minor Monogram").