Who does the voice of perry boss on Phineas and Ferb?

The voice of Perry the Platypus, also known as Agent P, on Phineas and Ferb is provided by Dee Bradley Baker.

He's also known for voicing a wide range of characters in animated series, including:

* Appa and Momo in *Avatar: The Last Airbender*

* The clones in *Star Wars: The Clone Wars*

* The animals in *American Dad* and *Family Guy*

* Various characters in *SpongeBob SquarePants*