
Like the other characters of the series, Perry was structured simplistically to allow young viewers to easily draw him. The opening lyrics for the song describe Perry as a standard textbook definition of a platypus: "a semi-aquatic egg-laying mammal of action." They were nervous doing so, because, as Povenmire explained, "Disney has a big history of music - what if they hate it?" Their reaction, however, was considerably positive and the pair was asked to write a song for each episode, which they vehemently agreed to. The song, along with the number "Gitchee Gitchee Goo" from the episode "Flop Starz", was the first musical composition Povenmire and Marsh pitched to the Walt Disney Company. Perry has a theme song performed by Randy Crenshaw and Laura Dickinson, and written by Povenmire and Marsh, who write the majority of songs in the series. The animal was scarcely used in American animated programs, so the pair opined that Perry "would not have to compete with preconceived notions that viewers might bring to a more conventional critter." The blank storyboard they were given allowed them to "make stuff up" since "no one knows very much about. While choosing a species for Perry, Povenmire and Marsh wanted to keep in mind selecting one that was uncommon, an animal that kids could not "pick out at a pet store and beg for." They choose a platypus because of the animal's obscure and striking appearance. They gave him a consistent and continuous arch nemesis in the form of Doofenshmirtz as a means of allowing viewers to get to know him.
PERRY THE PLATYPUS GAMES SERIES
Povenmire and Marsh wanted to reuse these elements in their series and chose Perry to execute it. Among these were action sequences and chase scenes. While working on the animated television series Rocko's Modern Life, Phineas and Ferb co-creators Dan Povenmire and Jeff "Swampy" Marsh utilized several recurring elements in the episodes that they wrote. Looking simple and innocent is just Perry's way of keeping his cover as he fights against Dr. One example is the Chimney Vator, in which he encounters Santa Claus. Perry has a lair under the Flynn-Fletchers' house which can be entered through various passages.

Perry doesn't speak at all, apart from the growling noise he makes. When they adopted the platypus, he was given the name " Bartholomew" before he was renamed "Perry".

The reason he was adopted was that, according to Phineas, Perry looked at both Phineas and Ferb at the same time. The Flynn-Fletcher family adopted Perry after Bucky’s disappearance. Carl was disguised as a lady with brown hair. Perry was adopted five years prior to the series’ events, at an animal shelter run by the O.W.C.A. 5.12 Balthazar Cavendish and Vinnie Dakota.4.1 Phineas and Ferb: Across the 2nd Dimension (video game).2.3 Phineas and Ferb The Movie: Across the 2nd Dimension.
