JM
Jeff 'Swampy' Marsh
Actor, Director, Producer, Writer, Additional Credits
Born December 9, 1960 (63 years)
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
| 2022 | Hamster & Gretel (TV Series) · as Additional Voices |
| 2020 | Phineas and Ferb the Movie: Candace Against the Universe · as Major Monogram (voice) |
| 2017 | Pete the Cat (TV Series) · as Pete's Dad |
| 2016 | Milo Murphy's Law (TV Series) · as Additional Voices (voice) |
| 2016 | Better Things (TV Series) · as Director |
| 2015 | Phineas and Ferb: The O.W.C.A. Files · as Major Monogram / Additional Voices (voice) |
| 2015 | Phineas and Ferb: Last Day of Summer · as Major Monogram (voice) |
| 2014 | Ronja, the Robber's Daughter (2014) (TV Series) · as Musician B |
| 2014 | Phineas and Ferb: Night of the Living Pharmacists · as Major Francis Monogram (voice) |
| 2014 | Phineas and Ferb: Star Wars · as Major Hologram / Imperial Officer Jeff / Additional Voices |
| 2013 | Phineas and Ferb: Mission Marvel · as Francis Major Monogram / Gordon Gutsofanemu / Additional Voices |
| 2013 | Phineas and Ferb: The Perry Files - Animal Agents · as Major Monogram (voice) |
| 2012 | |
| 2011 | Phineas and Ferb the Movie: Across the 2nd Dimension · as Major Francis Monogram / Monogram-2 (voice) |
| 2010 | Phineas and Ferb: Summer Belongs to You! · as Major Francis Monogram (voice) / Additional Voices |
| 2009 | Phineas and Ferb Christmas Vacation! · as Major Monogram (voice) |
| 2007 | Phineas and Ferb (TV Series) · as Francis Monogram (voice) |
| 2003 | Bounty Hamster (TV Series) · as (voice) |
| 2000 | Aaagh! It's the Mr. Hell Show!!! (TV Series) · as Josh (voice) |