Doofapus

The best way to defeat a platypus is to become a platypus!

Doofenshmirtz turns himself into a platypus to defeat Perry, but finds it harder than he imagined.

Songs

 * A Platypus Fight

The "Too Young" Line
None.

Whatcha doin'?
None.

Perry's entrance to his lair
He rides a tricycle and enter to the underground parking lot and later an elevator to his lair.

Evil Jingle
Doofenshmirtz Evil Incorporated!

Background Information

 * http://www.twondemand.com/tv/disney-on-demand/svod/disney-channel/phineas-and-ferb
 * Phineas reveals that he doesn't like Zucchini.
 * Buford reveals he has life-sized molds of everyone.
 * This episode marks Stacy's Birthday.

Production Information

 * This episode was aired on Disney Channel on Demand on June 29, 2012.

Continuity

 * Fifth time the word "Doof" is in the episode name ("Hail Doofania!", "The Doof Side of the Moon", "Doof Dynasty", "Agent Doof").
 * Seventh time a title of an episode has only one word. ("Rollercoaster", "S'Winter", "Atlantis", "Canderemy", "Bullseye!", "Excaliferb")
 * Second time someone else other than Perry is a platypus. ("Does This Duckbill Make Me Look Fat?")
 * Third time Doofenshmirtz has a platypus-related scheme. ("Greece Lightning", "Cheer Up Candace")
 * Third time Doofenshmirtz turns into an animal. ("Phineas and Ferb Hawaiian Vacation", "That's the Spirit")
 * Third time Perry fights with another platypus. ("Cheer Up Candace","Phineas and Ferb The Movie: Across the 2nd Dimension")
 * Second time Doofenshmirtz is seen with a platypus tail. ("Sleepwalk Surprise")
 * Doofenshmirtz decides to fight "fire with fire" again. ("Cheer Up Candace")
 * The title sounds like "Doof 'n' Puss". ("Nerds of a Feather").
 * If the above fact of Stacy's birthday being celebrated is true, then this would be the seventh character to have a birthday (Candace Looses her Head "[[Mom's Birthday}", "[[Raging Bully", "Dude, We're Getting the Band Back Together",

Cast

 * Vincent Martella as Phineas
 * Ashley Tisdale as Candace
 * Thomas Sangster as Ferb
 * Caroline Rhea as Mom
 * Alyson Stoner as Isabella
 * Dan Povenmire as Dr. Doofenshmirtz
 * Jeff "Swampy" Marsh as Major Monogram
 * Tyler Alexander Mann as Carl
 * Dee Bradley Baker as Perry
 * Maulik Pancholy as Baljeet
 * Bobby Gaylor as Buford