 In addition to the main television series , Perry has appeared in several pieces of Phineas and Ferb merchandise . To date , he has appeared in all Phineas and Ferb <unk> , published by Disney Press . The character has been adapted into a 20 inch plush toy , released by The Walt Disney Company . The plush has a button on its hand that allows it to emit Perry 's signature chattering noise . Certain t @-@ shirts based on the series released by both Disney and the online retail website <unk> also display Perry and the phrase " Hey , where 's Perry ? " which most characters like Phineas , Isabella , Stacy , Irving , Ferb , and Lawrence utter when Perry goes to Major Monogram in his secret lair in almost every episode . There also is a T @-@ <unk> with Perry 's face . Perry appears in the Nintendo DS video game based on the series , simply titled Phineas and Ferb , where a mini @-@ game involves Perry stopping Doofenshmirtz 's latest evil scheme . As of 1 April 2014 , Perry is also a playable character in the video game Disney Infinity . 
