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Jeff 'Swampy' Marsh 
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 Phineas and Ferb The Movie: Candace Against the Universe

as

2020
Milo Murphy's Law

as Additional Voices (voice)

2016
Phineas and Ferb: Star Wars

as Major Hologram / Imperial Officer Jeff / Additional Voices

2014
Phineas and Ferb: The Perry Files - Animal Agents

as Major Monogram (voice)

2013
Phineas and Ferb: Mission Marvel

as

2013
Phineas and Ferb The Movie: Across the 2nd Dimension

as Major Francis Monogram / Monogram-2 (voice)

2011
Aaagh! It's the Mr. Hell Show!

as Josh (voice)

2001
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Jeff 'Swampy' Marsh Jeff 'Swampy' Marsh

Birthday

1960-12-09

Place of Birth

Santa Monica, California, USA

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.
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