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
TV's Funniest Animated Stars: A Paley Center for Media Special
⭐ 0Phineas and Ferb The Movie: Across the 2nd Dimension
⭐ 7.1Phineas and Ferb: The O.W.C.A. Files
⭐ 7.75Phineas and Ferb: Night of the Living Pharmacists
⭐ 7.75Phineas and Ferb Christmas Vacation!
⭐ 7Phineas and Ferb: The Perry Files - Animal Agents
⭐ 8.4Phineas and Ferb: The Daze of Summer
⭐ 7Phineas and Ferb: Summer Belongs to You!
⭐ 7.8Phineas and Ferb: Last Day of Summer
⭐ 8Phineas and Ferb: Mission Marvel
⭐ 6.5Phineas and Ferb: Star Wars
⭐ 7.175I Know That Voice
⭐ 7.1Phineas and Ferb the Movie: Candace Against the Universe
⭐ 7.3Phineas and Ferb Save Summer
⭐ 0Milo Murphy's Law: The Phineas and Ferb Effect
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