Jeff 'Swampy' Marsh
0.7Acting

Jeff 'Swampy' Marsh

Dec 9, 1960 - Santa Monica, California, USA

Jeff "Swampy" Marsh (born December 9, 1960) is an American animator, writer, director, producer, and voice actor associated with several animated television series, most notably as an executive producer and the voice of Major Monogram for Disney's animated series Phineas and Ferb and Milo Murphy's Law, both of which he co-created with Dan Povenmire. Marsh was born in Santa Monica, California, where he grew up with a heavily blended family dynamic. Marsh has been and continues to be a driving force behind several animation projects, working for over six seasons on the animated television series The Simpsons. Marsh continued to work on other animated television series, including King of the Hill and Rocko's Modern Life, before moving to England in 1996.

Credits

Cast

Media
Movie2015TV's Funniest Animated Stars: A Paley Center for Media SpecialSelf
Movie2011Phineas and Ferb The Movie: Across the 2nd DimensionMajor Francis Monogram / Monogram-2 (voice)
Movie2015O.W.C.A. FilesMajor Monogram / Additional Voices (voice)
Movie2014Phineas and Ferb: Night of the Living PharmacistsMajor Francis Monogram (voice)
Movie2009Phineas and Ferb Christmas Vacation!Major Monogram (voice)
Movie2013Phineas and Ferb: The Perry Files - Animal AgentsMajor Monogram (voice)
Movie2012Phineas and Ferb: The Daze of Summer
Movie2010Phineas and Ferb: Summer Belongs to You!Major Francis Monogram (voice) / Additional Voices
Movie2015Phineas and Ferb: Last Day of SummerMajor Monogram (voice)
Movie2013Phineas and Ferb: Mission MarvelFrancis Major Monogram / Gordon Gutsofanemu / Additional Voices
Movie2014Phineas and Ferb: Star WarsMajor Hologram / Imperial Officer Jeff / Additional Voices
Movie2014I Know That VoiceSelf
Movie2020Phineas and Ferb the Movie: Candace Against the UniverseMajor Monogram (voice)
Movie2014Phineas and Ferb Save SummerMajor Francis Monogram / Additional Voices (voice)
Movie2025Spiked(voice)
TV Show2001Aaagh! It's the Mr. Hell Show!Josh (voice)13
TV Show2003Bounty Hamster(voice)1
TV Show2007Phineas and FerbFrancis Monogram (voice)249
TV Show2016Milo Murphy's LawAdditional Voices (voice)73
TV Show2022How NOT to DrawMajor Monogram (voice)1

Crew

Media
Movie2015O.W.C.A. FilesExecutive ProducerProduction
Movie2014Phineas and Ferb: Night of the Living PharmacistsCreatorCrew
Movie2010Phineas and Ferb: Summer Belongs to You!StoryWriting
Movie2010Phineas and Ferb: Summer Belongs to You!Additional WritingCrew
Movie2011Phineas and Ferb The Movie: Across the 2nd DimensionSequence SupervisorCrew
Movie2011Phineas and Ferb The Movie: Across the 2nd DimensionExecutive ProducerProduction
Movie2014Phineas and Ferb: Star WarsCreatorCrew
Movie2011Phineas and Ferb The Movie: Across the 2nd DimensionWriterWriting
Movie2020Phineas and Ferb the Movie: Candace Against the UniverseExecutive ProducerProduction
Movie2020Phineas and Ferb the Movie: Candace Against the UniverseCharactersWriting
Movie2020Phineas and Ferb the Movie: Candace Against the UniverseWriterWriting
Movie2012Phineas and Ferb: The Daze of SummerWriterWriting
Movie2013Phineas and Ferb: Mission MarvelCharactersWriting
Movie2014Phineas and Ferb: Star WarsCharactersWriting
Movie2009Phineas and Ferb Christmas Vacation!ProducerProduction
Movie1994Looks Can KillAssociate ProducerProduction
Movie2014Phineas and Ferb Save SummerCreatorCrew
TV Show2007Phineas and FerbWriterWriting
TV Show2007Phineas and FerbDirectorDirecting
TV Show2007Phineas and FerbExecutive ProducerProduction
TV Show2016Milo Murphy's LawExecutive ProducerProduction
TV Show2017Pete the CatWriterWriting
TV Show1993Rocko's Modern LifeStoryboard ArtistArt
TV Show1993Rocko's Modern LifeAdditional WritingCrew
TV Show1993Rocko's Modern LifeDirectorDirecting
TV Show2007Phineas and FerbStoryWriting
TV Show2016Milo Murphy's LawStoryWriting
TV Show2024Super Happy Magic ForestExecutive ProducerProduction
TV Show2007Phineas and FerbCreatorCreator
TV Show2010Take Two with Phineas and FerbCreatorCreator
TV Show2016Milo Murphy's LawCreatorCreator
TV Show2017Pete the CatCreatorCreator
TV Show2025Cartoonified! With Phineas and FerbCreatorCreator