Acting
Community Rating
7.4
TMDB estimate
Born
December 9, 1960 (age 65)
Born in
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.
Untitled Phineas and Ferb Movie
as Major Francis Monogram (voice), Writer, Executive Producer
TBA
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Agent P Under C
as Major Monogram (voice)
2026
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Hey A.J.!
as Executive Producer
2026
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Cartoonified! With Phineas and Ferb
as Creator
2025
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Spiked
as (voice)
2025
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Super Happy Magic Forest
as Executive Producer
2024
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How Not to Draw
as Major Monogram (voice)
2022
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Phineas and Ferb the Movie: Candace Against the Universe
as Major Monogram (voice), Executive Producer, Writer
2020
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Pete the Cat
as Writer, Creator
2017
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Milo Murphy's Law
as Additional Voices (voice), Executive Producer, Story, Creator
2016
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TV's Funniest Animated Stars: A Paley Center for Media Special
as Self
2015
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O.W.C.A. Files
as Major Monogram / Additional Voices (voice), Executive Producer
2015
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Phineas and Ferb: Last Day of Summer
as Major Monogram (voice)
2015
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Phineas and Ferb: Night of the Living Pharmacists
as Major Francis Monogram (voice)
2014
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Phineas and Ferb: Star Wars
as Major Hologram / Imperial Officer Jeff / Additional Voices
2014
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Phineas and Ferb Save Summer
as Major Francis Monogram / Additional Voices (voice)
2014
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I Know That Voice
as Self
2014
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Phineas and Ferb: Mission Marvel
as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices
2013
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Phineas and Ferb: The Perry Files - Animal Agents
as Major Monogram (voice)
2013
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Phineas and Ferb: The Daze of Summer
as Writer
2012
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