Loading amazing content...
Personal Info
Known For
Acting
Birthday
December 9, 1960
Place of Birth
Santa Monica, California, USA
Also Known As
- Jeff "Swampy" Marsh
- Jeff Harsh
- Jeff Swampy Marsh
- Jeffrey Marsh
- Jeff Marsh
- Swampy Marsh
- Swampi Marsh
- Jeffrey "Swampy" Marsh
Jeff 'Swampy' Marsh
0.3 Popularity
Biography
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.
Known For
10.0
(voice)
Spiked
2025
6.0
Major Monogram (voice)
How NOT to Draw
2022
7.3
Major Monogram (voice)
Phineas and Ferb the Movie: Candace Against the Universe
2020
7.4
Additional Voices (voice)
Milo Murphy's Law
2016
0.0
Self
TV's Funniest Animated Stars: A Paley Center for Media Special
2015
7.5
Major Monogram / Additional Voices (voice)
O.W.C.A. Files
2015
8.0
Major Monogram (voice)
Phineas and Ferb: Last Day of Summer
2015
7.9
Major Francis Monogram (voice)
Phineas and Ferb: Night of the Living Pharmacists
2014
7.2
Major Hologram / Imperial Officer Jeff / Additional Voices
Phineas and Ferb: Star Wars
2014
8.0
Major Francis Monogram / Additional Voices (voice)
Phineas and Ferb Save Summer
2014
Credits
Spiked
as (voice)
2025
10.0
How NOT to Draw
as Major Monogram (voice)
2022
6.0
Phineas and Ferb the Movie: Candace Against the Universe
as Major Monogram (voice)
2020
7.3
Milo Murphy's Law
as Additional Voices (voice)
2016
7.4
TV's Funniest Animated Stars: A Paley Center for Media Special
as Self
2015
0.0
O.W.C.A. Files
as Major Monogram / Additional Voices (voice)
2015
7.5
Phineas and Ferb: Last Day of Summer
as Major Monogram (voice)
2015
8.0
Phineas and Ferb: Night of the Living Pharmacists
as Major Francis Monogram (voice)
2014
7.9
Phineas and Ferb: Star Wars
as Major Hologram / Imperial Officer Jeff / Additional Voices
2014
7.2
Phineas and Ferb Save Summer
as Major Francis Monogram / Additional Voices (voice)
2014
8.0
I Know That Voice
as Self
2014
7.1
Phineas and Ferb: Mission Marvel
as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices
2013
6.6
Phineas and Ferb: The Perry Files - Animal Agents
as Major Monogram (voice)
2013
8.4
Phineas and Ferb: The Daze of Summer
2012
7.0
Phineas and Ferb The Movie: Across the 2nd Dimension
as Major Francis Monogram / Monogram-2 (voice)
2011
7.1
Phineas and Ferb: Summer Belongs to You!
as Major Francis Monogram (voice) / Additional Voices
2010
7.9
Phineas and Ferb Christmas Vacation!
as Major Monogram (voice)
2009
7.2
Phineas and Ferb
as Francis Monogram (voice)
2007
7.9
Bounty Hamster
as (voice)
2003
0.0
Aaagh! It's the Mr. Hell Show!
as Josh (voice)
2001
6.4