Jeff 'Swampy' Marsh

Known for: Acting
Born: December 9, 1960
Birthplace: 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.

Filmography

Sort

Untitled Phineas and Ferb Movie TBA
as Major Francis Monogram (voice), Writer, Executive Producer
Spiked 2025
as Big Boss Croc / Exterminator (voice)
Phineas and Ferb the Movie: Candace Against the Universe 2020
as Major Monogram (voice), Executive Producer, Writer
TV's Funniest Animated Stars: A Paley Center for Media Special 2015
as Self
Phineas and Ferb: Star Wars 2014
as Major Hologram / Imperial Officer Jeff / Additional Voices
I Know That Voice 2014
as Self
Phineas and Ferb: Mission Marvel 2013
as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices
Phineas and Ferb: The Perry Files - Animal Agents 2013
as Major Monogram (voice)
Phineas and Ferb: The Daze of Summer 2012
Actor, Writer
Phineas and Ferb the Movie: Across the 2nd Dimension 2011
as Major Francis Monogram / Monogram-2 (voice), Sequence Supervisor, Executive Producer, Writer
Phineas and Ferb Summer Belongs to you ! 2010
as Major Francis Monogramme
Looks Can Kill 1994
Associate Producer

Credits from TMDB.