Phineas and Ferb: Mission Marvel

Spider-Man, Iron Man, Thor and Hulk enter Danville after Dr. Doofenshmirtz's latest "inator" scheme accidentally removes their powers and immobilizes them. Now it's up to Phineas and Ferb to team up with the Marvel Super Heroes to help them regain their powers and defeat Marvel Super Villains – Red Skull, Whiplash, Venom and M.O.D.O.K. – who are working together with Dr. Doofenshmirtz to use his power-draining technology to create mayhem.

Perry's entrance to his lair
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Background Information

 * It will be the show's second one-hour special, following "Phineas and Ferb Summer Belongs to You!".
 * Dan Povenmire revealed in an interview that Doofenshmirtz creates the "power-drain-inator" with the intention of draining his brother's "power" as mayor of Danville, but it mistakenly hits Marvel's heroes. In the same interview, Jeff "Swampy" Marsh said that Candace's plot in the episode is going to involve her love to comic books and fan fiction.
 * This will be the first appearance of Spider-Man. Prior to this episode, he was parodied three times in the series canon ("Bowl-R-Ama Drama", "Phineas and Ferb Christmas Vacation!", "Bee Story").
 * The first images were shown in the Disney Channel Summer 2013 promo.

Production Information

 * This will be a special Season 4 episode and serve as the first animated crossover between Disney and Marvel, as formerly happened with the online game Club Penguin. It will premiere in the summer of 2013.
 * In 2009, Disney Company acquired Marvel Entertainment. "Our partnership with Marvel has yielded big returns this year - first with the launch of the Marvel Universe block on Disney XD, and now with production beginning on the Phineas and Ferb / Marvel special. To paraphrase Phineas himself: best year EVER!," said Gary Marsh, president and chief creative officer, Disney Channels Worldwide.
 * The storyboard of the episode's final act consists of 1801 pages.
 * A teaser trailer was released on May 15, 2013.
 * Dan Povenmire and Jeff "Swampy" Marsh tweeted pictures from the foley session for this episode.

Continuity

 * The Beak presumably appears again. ("The Beak", Phineas and Ferb The Movie: Across the 2nd Dimension)
 * According to promo images, Candace reprises her Dangeraffe "secret identity", also from "The Beak".

Cast

 * Vincent Martella as Phineas Flynn
 * Ashley Tisdale as Candace Flynn
 * Thomas Sangster as Ferb Fletcher
 * Alyson Stoner as Isabella Garcia-Shapiro
 * Caroline Rhea as Mom
 * Dan Povenmire as Dr. Doofenshmirtz
 * Jeff "Swampy" Marsh as Major Monogram
 * Tyler Alexander Mann as Carl
 * Dee Bradley Baker as Perry the Platypus
 * Bobby Gaylor as Buford Van Stomm
 * Maulik Pancholy as Baljeet Tjinder
 * Kelly Hu as Stacy Hirano
 * Stan Lee as NY Hot Dog Vendor
 * Drake Bell as Peter Parker/Spider-Man
 * Fred Tatasciore as Dr. Bruce Banner/Hulk
 * Adrian Pasdar as Tony Stark/Iron Man
 * Liam O'Brien as Red Skull
 * Charlie Adler as MODOK
 * Danny Trejo as Venom
 * Additional voices: Dave Wittenberg, David Boat, Mark Hamill, Chris Cox

The following are expected to be involved in the special:
 * Travis Willingham as Thor
 * Peter Kelamis as Whiplash
 * Clark Gregg as Agent Phil Coulson
 * Chi McBride as Nick Fury
 * Phil LaMarr as JARVIS
 * Dawn Oliveri as Pepper Potts