Jeff 'Swampy' Marsh

Jeff 'Swampy' Marsh

Filmography

As Cast

Agent P Under C (2026)
as Major Monogram (voice)
Spiked (2025)
as Big Boss Croc / Exterminator (voice)
How Not to Draw (2022)
as Major Monogram (voice)
Phineas and Ferb the Movie: Candace Against the Universe (2020)
as Major Monogram (voice)
Milo Murphy's Law (2016)
as Additional Voices (voice)
TV's Funniest Animated Stars: A Paley Center for Media Special (2015)
as Self
O.W.C.A. Files (2015)
as Major Monogram / Additional Voices (voice)
Phineas and Ferb: Last Day of Summer (2015)
as Major Monogram (voice)
Phineas and Ferb: Night of the Living Pharmacists (2014)
as Major Francis Monogram (voice)
Phineas and Ferb: Star Wars (2014)
as Major Hologram / Imperial Officer Jeff / Additional Voices
I Know That Voice (2014)
as Self
Phineas and Ferb Save Summer (2014)
as Major Francis Monogram / Additional Voices (voice)
Phineas and Ferb: The Perry Files - Animal Agents (2013)
as Major Monogram (voice)
Phineas and Ferb: Mission Marvel (2013)
as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices
Phineas and Ferb: The Daze of Summer (2012)
Phineas and Ferb the Movie: Across the 2nd Dimension (2011)
as Major Francis Monogram / Monogram-2 (voice)
Phineas and Ferb: Summer Belongs to You! (2010)
as Major Francis Monogram / Additional Voices (voice)
Phineas and Ferb Christmas Vacation! (2009)
as Major Monogram (voice)
Phineas and Ferb (2007)
as Francis Monogram (voice)
Bounty Hamster (2003)
as (voice)
Aaagh! It's the Mr. Hell Show! (2001)
as Josh (voice)
Untitled Phineas and Ferb Movie
as Major Francis Monogram (voice)

As Crew

Hey A.J.! (2026)
Executive Producer
Cartoonified! With Phineas and Ferb (2025)
Creator
Super Happy Magic Forest (2024)
Executive Producer
Phineas and Ferb the Movie: Candace Against the Universe (2020)
Executive Producer, Writer
Pete the Cat (2017)
Writer, Creator
Milo Murphy's Law (2016)
Executive Producer, Story, Creator
O.W.C.A. Files (2015)
Executive Producer
Phineas and Ferb: The Daze of Summer (2012)
Writer
Phineas and Ferb the Movie: Across the 2nd Dimension (2011)
Sequence Supervisor, Executive Producer, Writer
Phineas and Ferb: Summer Belongs to You! (2010)
Story, Additional Writing
Take Two with Phineas and Ferb (2010)
Executive Producer, Creator
Phineas and Ferb Christmas Vacation! (2009)
Producer
Phineas and Ferb (2007)
Writer, Director, Executive Producer, Story, Creator
Shadow of the Elves (2004)
Director
Looks Can Kill (1994)
Associate Producer
Rocko's Modern Life (1993)
Storyboard Artist, Additional Writing, Director
Untitled Phineas and Ferb Movie
Writer, Executive Producer