Acting credits
22
Active
Consistent number of acting credits.
Actor
Jeff 'Swampy' Marsh
Acting
Career Snapshot
ExplainedThese indicators come from TMDB. They are relative signals, not review ratings.
TMDB popularity
1.0
Low visibility
TMDB internal trend index. Higher usually means more searches and page activity now.
Movies: 17Series: 13Crew credits: 21
TMDB ID: 567615
IMDb ID: nm0550578
Known for: Acting
Born: December 9, 1960
Age: 65
Place of birth: Santa Monica, California, USA
Gender: Male
Adult content flag: No
Career span: 1993 - 2026
Years active: 34
Average TMDB rating: 7.39
Wikidata: Q290744
Also known as
Jeff "Swampy" Marsh • Jeff Harsh • Jeff Swampy Marsh • Jeffrey Marsh • Jeff Marsh • Swampy Marsh • Swampi Marsh • Jeffrey "Swampy" Marsh
Other jobs
Creator (5)Executive Producer (4)Writer (4)Characters (2)Associate Producer (1)Director (1)Producer (1)Sequence Supervisor (1)
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.
Movies
Movies
Movie credits linked with Jeff 'Swampy' Marsh.
10.0
Spiked
as (voice)
2025 Movie
7.3
Phineas and Ferb the Movie: Candace Against the Universe
as Major Monogram (voice)
2020 Movie
TV's Funniest Animated Stars: A Paley Center for Media Special
as Self
2015 Movie
7.5
O.W.C.A. Files
as Major Monogram / Additional Voices (voice)
2015 Movie
8.0
Phineas and Ferb: Last Day of Summer
as Major Monogram (voice)
2015 Movie
7.9
Phineas and Ferb: Night of the Living Pharmacists
as Major Francis Monogram (voice)
2014 Movie
7.2
Phineas and Ferb: Star Wars
as Major Hologram / Imperial Officer Jeff / Additional Voices
2014 Movie
8.0
Phineas and Ferb Save Summer
as Major Francis Monogram / Additional Voices (voice)
2014 Movie
7.1
I Know That Voice
as Self
2014 Movie
6.6
Phineas and Ferb: Mission Marvel
as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices
2013 Movie
8.4
Phineas and Ferb: The Perry Files - Animal Agents
as Major Monogram (voice)
2013 Movie
7.0
Phineas and Ferb: The Daze of Summer
2012 Movie
7.1
Phineas and Ferb The Movie: Across the 2nd Dimension
as Major Francis Monogram / Monogram-2 (voice)
2011 Movie
7.9
Phineas and Ferb: Summer Belongs to You!
as Major Francis Monogram (voice) / Additional Voices
2010 Movie
7.2
Phineas and Ferb Christmas Vacation!
as Major Monogram (voice)
2009 Movie
5.5
Looks Can Kill
Associate Producer
1994 Movie
Untitled Phineas and Ferb Movie
as Major Francis Monogram (voice)
Movie
Series
Series
Series credits linked with Jeff 'Swampy' Marsh.
Agent P, Under C
as Major Monogram (voice) • 8 eps
2026 Series
Hey A.J.!
Executive Producer • 7 eps
2026 Series
Cartoonified! With Phineas and Ferb
Creator
2025 Series
Super Happy Magic Forest
Executive Producer • 52 eps
2024 Series
6.0
How NOT to Draw
as Major Monogram (voice) • 1 eps
2022 Series
7.7
Pete the Cat
Writer • 2 eps
2017 Series
7.4
Milo Murphy's Law
as Additional Voices (voice) • 73 eps
2016 Series
7.6
Take Two with Phineas and Ferb
Creator
2010 Series
7.9
Phineas and Ferb
as Francis Monogram (voice) • 261 eps
2007 Series
6.0
Shadow of the Elves
Director • 26 eps
2004 Series
Bounty Hamster
as (voice) • 1 eps
2003 Series
6.4
Aaagh! It's the Mr. Hell Show!
as Josh (voice) • 13 eps
2001 Series
7.4
Rocko's Modern Life
Storyboard Artist • 20 eps
1993 Series