Jeff 'Swampy' Marsh
Acting
1960-12-09 · 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.
tvAgent P Under C
as Major Monogram (voice) · 2026 · 8.4
movieSpiked
as Big Boss Croc / Exterminator (voice) · 2025 · 8.0
tvHow Not to Draw
as Major Monogram (voice) · 2022 · 8.0
moviePhineas and Ferb the Movie: Candace Against the Universe
as Major Monogram (voice) · 2020 · 7.2
tvMilo Murphy's Law
as Additional Voices (voice) · 2016 · 7.4
movieTV's Funniest Animated Stars: A Paley Center for Media Special
as Self · 2015 · 0.0
movieO.W.C.A. Files
as Major Monogram / Additional Voices (voice) · 2015 · 7.5
moviePhineas and Ferb: Last Day of Summer
as Major Monogram (voice) · 2015 · 8.0
moviePhineas and Ferb: Night of the Living Pharmacists
as Major Francis Monogram (voice) · 2014 · 7.9
moviePhineas and Ferb: Star Wars
as Major Hologram / Imperial Officer Jeff / Additional Voices · 2014 · 7.2
moviePhineas and Ferb Save Summer
as Major Francis Monogram / Additional Voices (voice) · 2014 · 8.0
movieI Know That Voice
as Self · 2014 · 7.1
moviePhineas and Ferb: Mission Marvel
as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices · 2013 · 6.6
moviePhineas and Ferb: The Perry Files - Animal Agents
as Major Monogram (voice) · 2013 · 8.4
moviePhineas and Ferb: The Daze of Summer
as · 2012 · 7.0
moviePhineas and Ferb The Movie: Across the 2nd Dimension
as Major Francis Monogram / Monogram-2 (voice) · 2011 · 7.1
moviePhineas and Ferb: Summer Belongs to You!
as Major Francis Monogram / Additional Voices (voice) · 2010 · 7.8
moviePhineas and Ferb Christmas Vacation!
as Major Monogram (voice) · 2009 · 7.3
tvPhineas and Ferb
as Francis Monogram (voice) · 2007 · 7.9
tvBounty Hamster
as (voice) · 2003 · 0.0
tvAaagh! It's the Mr. Hell Show!
as Josh (voice) · 2001 · 6.5
movieUntitled Phineas and Ferb Movie
as Major Francis Monogram (voice) · 0.0