Jeff 'Swampy' Marsh

Acting

Born: 1960-12-09 · 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 L…