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Jeff 'Swampy' Marsh
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.
As actor
Spiked
Phineas and Ferb the Movie: Candace Against the Universe
TV's Funniest Animated Stars: A Paley Center for Media Special
O.W.C.A. Files
Phineas and Ferb: Last Day of Summer
Phineas and Ferb: Night of the Living Pharmacists
Phineas and Ferb: Star Wars
I Know That Voice
Phineas and Ferb Save Summer
Phineas and Ferb: The Perry Files - Animal Agents
Phineas and Ferb: Mission Marvel
Phineas and Ferb: The Daze of Summer
Phineas and Ferb The Movie: Across the 2nd Dimension
Phineas and Ferb: Summer Belongs to You!
Phineas and Ferb Christmas Vacation!
Untitled Phineas and Ferb Movie